Car companies are coming up with a lot of radical ideas. Here are ten that should go the distance, from Detroit's 2007 North American International Auto Show.
GM's Chevy Volt
Fortune columnist Sue Callaway with GM Vice Chairman of Product Development Bob Lutz, in front of the Chevy Volt
Most promising hardware:
GM's Chevy Volt
The Volt is an electric vehicle that will recharge on a normal 110-volt outlet and have a range of 40 miles on battery power and an impressive 640-mile maximum when the one-liter gasoline backup engine kicks in.

Vice chairman and red-blooded sports car lover Bob Lutz was the force behind the striking (and Camaro-resembling) Volt, which he says wasn't an easy sell in the boardroom. "I have never been more excited about a car in my entire career than the Volt," he told me.

The Volt is built on GM's new E-Flex platform, which uses electricity to drive the wheels and can accommodate different types of propulsion systems--gas, ethanol, bio-diesel, or hydrogen. However, it relies on a large lithium-ion battery, which isn't likely to be ready and affordable for a mass-market car before 2010 to 2012. I hope GM remains focused on such long-range--and costly--technology; the world is watching.

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Most stock quote data provided by BATS. Market indices are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer. Morningstar: © 2018 Morningstar, Inc. All Rights Reserved. Factset: FactSet Research Systems Inc. 2018. All rights reserved. Chicago Mercantile Association: Certain market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. Dow Jones: The Dow Jones branded indices are proprietary to and are calculated, distributed and marketed by DJI Opco, a subsidiary of S&P Dow Jones Indices LLC and have been licensed for use to S&P Opco, LLC and CNN. Standard & Poor's and S&P are registered trademarks of Standard & Poor's Financial Services LLC and Dow Jones is a registered trademark of Dow Jones Trademark Holdings LLC. All content of the Dow Jones branded indices © S&P Dow Jones Indices LLC 2018 and/or its affiliates.