General Motors Chairman and CEO Rick Wagoner introduced the company's latest hydrogen fuel-cell-powered vehicle, the Cadillac Provoq, at the Consumer Electronics Show (CES) during his keynote speech Tuesday. The luxury SUV is the first new vehicle ever introduced at CES' 41-year history, and Wagoner is the first auto executive ever to give a keynote speech at the Las Vegas event.

The Provoq follows GM's recent announcement they intend to go ahead with production of the Chevrolet Volt, a concept vehicle first shown at Detroit's North American International Auto Show almost exactly one year ago. The Volt delivered Wagoner to the stage at CES.

The Provoq has GM's fifth-generation fuel-cell system, boasting half the size of its predecessor. Wagoner said the Provoq has a 300-mile range and promised a 100-mph top speed and 0-60 mph acceleration in 8.5 seconds.

To help conserve energy, the Provoq is equipped with a roof-mounted solar panel to power interior lighting and audio systems, an active front grille that shuts its opening for better aerodynamics, and both braking- and shifting-by-wire to save weight.

No production plans were announced. We expect to see the Provoq again next week as we cover the 2008 North American International Auto Show.

—Jim Travers

Learn more about fuel efficiency and alternative vehicles in our Fuel Economy special section.