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From Dec. IEEE Spectrum magazine.

LIGHT AND LIVELY
THIS CAR, A FOSSIL FUEL FREE VEHICLE prototype developed by engineers at the German Aerospace Center, represents a sea change in how vehicles are built and how much energy they use. Its body comprises front and rear sections made of plastic foam sandwiched between thin metal outer layers. The passenger cabin is a two-seater pod designed to absorb the forces acting on the lightweight vehicle in the event of a collision. All told, the car, dubbed the Safe Light Regional Vehicle (SLRV), weighs only 450 kilograms (about 1000 lbs.) It’s propelled by a hybrid power train featuring an 8.5-kilowatt (8.25 Hp) fuel cell and a 25-kW (33.5 Hp) battery that provide all the power such a slight vehicle needs for acceleration. The battery and a 39-liter (about 10 gal.) hydrogen tank provide enough energy for 400 kilometers (250 mi) of range. The SLRV team predicts that the vehicle, envisioned for car sharing and shuttle services, will retail for €15,000 ($18,150).