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Opel Trixx concept for the Geneva Motor Show

Opel/Vauxhall has released first details of the Trixx small car concept to be shown at the Geneva Motor Show next month. Martin Smith, Opel/Vauxhall executive director of design, says: "Trixx shows our vision of an innovative, ultra-compact car in the three-metre-class, with an expressive, exciting design, and meets a variety of mobility requirements with its clever, highly versatile interior concept." Trixx has an inflatable rear seat, sliding electric doors, and a push-button roof hatch that allows it to carry extra-long objects upright. The versatile car can carry up to three adults and a child, and as a one-seater it turns into a substantial load carrier.

New vehicle labels to compare fuel economy, emissions with U.S. average

Window sticker labels will show how new vehicles' fuel economy and emissions levels compare with the U.S. fleet average starting in the 2013 model year, the Obama administration said Wednesday. The new federal rules carry out a 2007 law that requires labels to put new vehicles in fleetwide context for fuel economy, greenhouse gases and smog-forming pollutants.

Chevrolet Camaro ZL1 hits the wind tunnel, gains downforce: Video

We've seen the gaudy output numbers of the 2012 Chevrolet Camaro ZL1: 580 hp and 556 lb-ft of torque make it the fastest Camaro ever produced--by a long shot. We've seen it at the Nordschleife dropping a supercar-like time of 7 minutes, 41.27 seconds around the 13-mile, 170-turn track. Now it's time to learn a little bit about what it takes to stabilize such a powerful beast at speed.