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.
Audi's 6-liter V12 TDI Q7
The mighty diesel V12 Q7: descended from a race car
Most audacious:
Audi's 6-liter V12 TDI Q7
Armed with the state-of-the-art diesel engine that won Le Mans last year, this SUV boasts 500 hp and a mighty 737 lb ft of torque @ 1,750 to 3,000 rpm. Woof! Take that, Porsche Cayenne Turbo.

Audi's new leader, Rupert Stadler, told me at the show that the V12 Q7 was only one of many up-and-coming high-performance, high-profile vehicles in Audi's arsenal. He is counting on these standouts to significantly grow the brand's presence in America, where Audi only sold 90,116 last year (vs. BMW's 274,432).

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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.