2011 Frankfurt auto show: Mercedes F125 concept

The F125 concept shows Mercedes' deepest thinking on the future of its cars.

Play

Squint and you are probably looking at the future of the Mercedes-Benz S Class.

With electric wheels at all four corners and hydrogen fuel cell technology feeding them, this future Benz is clearly pondering the future of the S Class, a type of car that is threatened by ever-increasing standards for fuel economy and emissions in its main markets around the world.

(CNET's full coverage of the 2011 Frankfurt auto show)

Featured Video

Shootout: Miata vs. Slingshot for budget, open-top performance

It's increasingly hard to find a good, cheap roadster. Can this three-wheeler topple Mazda's dominance?

by Tim Stevens