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Video: Mercedes-Benz F700

CNET Car Tech posts video of the Mercedes-Benz F700 at the 2007 Frankfurt auto show.

Ever dream of an S Class with a four-cylinder engine? The F700 research vehicle uses an innovative engine, called the DiesOtto, that burns gasoline but works like a diesel. It is amazingly efficient, with enough power to move a large sedan.

See all 2007 Frankfurt auto show coverage