The Mercedes-Benz Blue concept vehicle is an experimental vehicle powered by a lithium ion battery, utilizing a new small-car chassis. Mercedes won't say when and if the car is going into production but given the regulatory pressure in Europe and the U.S. for vehicles that emit zero pollution, as this car does, it's a good bet that the company's high command will wind up putting it on the road in the not too distant future. Mercedes-Benz Smart unit also is showing off an all-electric version of its tiny city car.