Apart from the 2012 Hyundai Veloster, the second vehicle designed at the California center, and unveiled at this year’s Detroit Motor Show is the Hyundai Curb Concept which is a compact Urban Activity Vehicle (UAV).
The Hyundai Curb Concept features a ‘Hi-Tech Rugged’ design with a high-tech interior, measures 164.2 inches in length, 70.9 inches in width and 63 inches in height (wheelbase 103.9 inches), and weights a total of 2,800 lbs.
Powering the Hyundai Curb Concept is a 1.6-litre turbocharged 4-cylinder engine which uses the GDI technology (Gasoline Direct Injection) and which sends 175 HP and 169 lb-ft of torque to the wheels via a Direct Shift Gearbox (DSG).
The Hyundai Curb Concept would be able to return 35+ mpg (combined cycle) thanks in part to its Idle Stop and GO (ISG) system as well.   
In terms of design, the Hyundai Curb Concept which also servers as a testing platform for the Hyundai Blue Link and other vehicle connectivity technology, features an elongated windscreen that ‘spills into the hood’ and covers the A pillars, thin headlamps which create the illusion that they are connected to the engine compartment, 20 inch five spoke wheels and an overall aspect that resembles a ‘boomerang trajectory’.
Full details with the Hyundai Curb Concept in the official press release below.
Hyundai press release :
DETROIT, Jan. 10, 2011 – Hyundai California Design Center and Hyundai Motor America presented the world debut of the Hyundai Curb concept vehicle during a press conference at the Detroit International Auto Show today. Curb is a compact Urban Activity Vehicle (UAV) for the next generation of Hyundai buyers. Curb is also a test bed for future Hyundai Blue Link™ and vehicle connectivity technology.
HIGHLIGHTS FOR CURB CONCEPT
    * Compact CUV for Generation Y living an urban lifestyle with an active night life
    * ‘Hi-Tech Rugged’ design – high-tech interior, rugged exterior
    * Advanced Hyundai Blue Link and vehicle connectivity technology
          o Via touch sensors and screens
          o Continental 12-inch display
          o Continental Reflective Heads Up Display (HUD)
    * Big cargo-hauling capability
    * Pop-up roof rack and pull-out bike rack
    * 1.6-litre “Gamma” powertrain
    * Curb is the twelfth signature concept vehicle (HCD-12) to be designed at the company’s California Design Center in Irvine, Calif.
POTHOLES AND NIGHTCLUBS
The inspiration for Curb came from the need to evolve Hyundai’s “Fluidic Sculpture” design language for younger buyers. Hyundai designers wanted to create a vehicle loaded with technology that was at home in an urban environment with potholes and densely packed nightclubs on the streets. The vehicle needed tosecure the advanced Blue Link and connectivity features against impact and shock. From these ideas, the ‘technology rugged’ design direction for Curb was formed.
“We wanted the Curb to be urban tough without looking like a Brink’s truck,” said Jason Brown, Hyundai designer. “City driving was going to be its forte, not crossing the Rubicon trail, but we wanted it to have urban armor for daily driving on city streets. It needed to empower its passengers in this setting.”
EXTERIOR DESIGN
The Curb’s design starts with the glass that spills into the hood and wraps around the cowl, covering the A pillars. This look resembles the face shield of a sport bike motorcycle helmet. Beneath the glass are structural trusses with the glass panels applied like a shield.
“The truss frame structure going up the pillars helps increase greater visibility in dense urban environments,” said John Krsteski, Curb design manager.
The striking profile is dominated by a boomerang trajectory bodyside line. This dominate line brings the entire design together and reinforces the feeling of strength with its positive and negative shapes.
“The world has never seen lines like this on a car before.  It is as if the architect Santiago Calatrava inspired it,” said Arash Badeanlou, Hyundai designer.     
The thin, sleek headlamps and taillamps dive into the vehicle, creating the illusion that they are connected into the engine compartment or interior. To complete the ‘technology rugged’ look, designers added 22-inch five spoke wheels and Michelin tires with a custom saffron colored tread pattern to match the interior. These wheels have spokes set into the tires to make them have a more pronounced profile. To enter the Curb, one simply drags their finger across a touch pad to open the doors. 
The exhaust vents serve a dual purpose. They pop out to reveal a bike rack so the owner could park and ride a “Fixie” (fixed gear) bike to the rest of his destinations as an alternative transportation source. The roof also features pop-up roof rack towers, demonstrating the perfect blend of being rugged, yet high-tech. Curb has a lighted clam shell rear hatch, also opened via a touchpad for loading gear and a third rear access door for easy passenger ingress and egress.
At startup, the Curb’s numerous LED lights illuminate sequentially, starting with the outside rows and the Curb’s badging illuminates through the paint. Shamze Custom Coatings developed the One-Way paint finish allowing the Curb name to illuminate through the paint.
EMPOWERED CONNECTIVITY
Connectivity is the theme for the interior, which is why information flows seamlessly from outside to inside of the Curb. 
“The goal was to make sure passengers felt connected to each other and the urban environment around them,” said Bradley Arnold, Curb interior designer. “We wanted to empower the passengers with information and make them feel that the exterior was connected to the interior.”
A large acrylic screen with multiple zones allows information to be passed between passengers all via a touchscreen that appears endless. It flows like a river from the gauge cluster to the center stack controls, across the instrument panel and all the way into back seat. The steering wheel itself is an opaque surface with a monitor showing through. There are also monitors in the back of the headrests. A Heads Up Display (HUD) provided by Continental with navigation keeps the drivers eyes on the road, while passengers search for their favorite channel on Pandora. Drivers are able to navigate their music via a 3-D carousel of album cover art as well as view the related cover art for a currently playing track. Cameras also replace the side mirrors and are linked to the HUD. The screen can also display vehicle diagnostics, download apps and act as a video phone all with a single touch sensor control strip provided by Methode.
To bring the outside look inside, the Curb designers had the rocker panels flow into the interior of the vehicle to create a seamless design. The Curb links its interior and exterior designs together by having the rocker panels viewable from the exterior flow into the interior. The three-holed open truss structured A-pillars enhance the driver’s cornering visibility, structurally support the roof and are made from a single milled piece. This metal structure connects everything together. 
Saffron accents inside match the ones on the tires. The saffron accents gradient across the seats, which are made of super-stretch, fast-drying board short material. Thin seats have been visible in concept cars for decades. Now there are materials like those found in running shoes that can make seats like these possible. The Curb features Air Bladder seats from Finn Tech that are less than two inches thick. These thin seats maximize interior space while supplying surprising comfort. The rear bench seat also has forward and aft movement.  
When it comes to storage capacity, Curb has rear head rests mounted to its robust frame, rather than to the seats. These head rests swivel up into the roof, allowing the rear seats to fold flat.
HYUNDAI BLUE LINK TECHNOLOGY
Generation Y wants to be connected to their electronics at all times. Inside the Curb, a driver could be listening to their favorite station on Pandora, cruising the city and get a phone call from a friend. Using Blue Link, the caller’s location shows up as a Point-of-Interest (POI).  The friend tells the driver that he just discovered a great band playing at a local club and invites him to come. His location then becomes the destination for the turn-by-turn directions.
    * The Blue Link Location Sharing feature will send Curb’s location to select members of social networking sites. The process starts by adding friend’s email addresses to the Blue Link Location Sharing website. The driver can then let his or her friends know they are in route by sending a Location Sharing message from inside Curb. If a friend has accepted the owner’s invitation to Location Sharing then that location will show up as a point of interest on the navigation screen.
BLUE LINK FEATURES INCORPORATED INTO CURB CONCEPT
Blue Link Assurance
    * Automatic Crash Notification and Assistance
    * SOS Emergency Assistance
    * Enhanced Roadside Assistance
Blue Link Essentials
Remote Access:
    * Remote Door Unlock / Lock
    * Remote Horn & Lights
    * Panic Notification
    * Remote Vehicle Start
Convenience:
    * Alarm Notification
    * Quick Tips
    * Location Sharing
    * Voice Text Messaging
Vehicle Self Diagnostics:
    * Automated Diagnostic Trouble Code Notification
    * Maintenance Alert
    * Monthly Vehicle Report
    * Recall Advisor
    * Web Vehicle Diagnostics
Theft Protection:
    * Stolen Vehicle Recovery
    * Stolen Vehicle Slowdown
    * Vehicle Immobilization
Safeguard:
    * Valet Alert
    * Geofence
    * Speed Alert
    * Curfew
Blue Link Guidance
    * Turn-by-Turn Navigation
    * POI Search by advanced voice recognition system
    * POI Web Search & Download
    * Daily Route Guidance with Traffic Condition
    * Traffic
    * Gas Station Locations & Gas Prices
    * Eco-Coach
    * Restaurant Ratings
    * Weather
1.6-LITRE GAMMA POWERTRAIN
The Curb is powered by a turbocharged 1.6-litre Gasoline Direct Injection (GDI) four-cylinder engine mated to Direct Shift Gearbox (DSG). This powertrain develops 175 horsepower and 169 lb. ft. of torque. By adding Idle Stop and Go (ISG) technology, the Curb would deliver 30+ miles per gallon in the city and 40+ miles per gallon on the highway.  
SPECIFICATIONS

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Configuration Compact Crossover Utility Vehicle (CUV)
Engine Turbocharged 1.6-litre GDI four-cylinder engine with ISG
Transmission DSG
Horsepower 175 hp (estimated)
   
Weight  2,800 lbs.
   
Wheelbase 103.9 inches
Overall length 164.2 inches
Overall width 70.9 inches
Overall height 63 inches
Wheels inches
Tires Michelin
Fuel economy 30+ mpg city / 40+ mpg highway (estimated)
12-inch display Continental
HUD Continental Reflective Technology
Operating system Continental AutoLinq
Touch sensors Provided Methode Electronics TouchSense® technology
Illuminated Curb logo via One-Way paint Shmaze Custom Coatings
Seats Air Bladder by Finn Tech
   

HYUNDAI MOTOR AMERICA
Hyundai Motor America, headquartered in Fountain Valley, Calif., is a
subsidiary of Hyundai Motor Co. of Korea. Hyundai vehicles are
distributed throughout the United States by Hyundai Motor America and
are sold and serviced through almost 800 dealerships nationwide. All
Hyundai vehicles sold in the U.S. are covered by the Hyundai Assurance
program which now includes the 5-year/60,000 mile fully transferable
bumper-to-bumper warranty, Hyundai’s 10-year/100,000 mile powertrain
warranty and 5-year complimentary Roadside Assistance in addition to the
highly acclaimed vehicle return policy introduced in early 2009. For
more details on Hyundai Assurance, please visit www.HyundaiAssurance.com.

Source: Hyundai