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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Market indexes are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer LIBOR Warning: Neither BBA Enterprises Limited, nor the BBA LIBOR Contributor Banks, nor Reuters, can be held liable for any irregularity or inaccuracy of BBA LIBOR. Disclaimer. Morningstar: © 2014 Morningstar, Inc. All Rights Reserved. Disclaimer The Dow Jones IndexesSM are proprietary to and distributed by Dow Jones & Company, Inc. and have been licensed for use. All content of the Dow Jones IndexesSM © 2014 is proprietary to Dow Jones & Company, Inc. Chicago Mercantile Association. The market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. FactSet Research Systems Inc. 2014. All rights reserved. Most stock quote data provided by BATS.