The Equinox, GM's fourth-generation fuel-cell car, has an electric motor which has no fuel injection, no pistons, no transmission, no motor oil.

NPR: On the Road with GM's Newest Hydrogen Car

On the other side the electrons return via the second electrode, having passed through the coils of an electric motor that drives the wheels of the car.

ECONOMIST: Fuel cells hit the road | The

But the 60-kilowatt electric motor and lithium-ion battery pack are coming to a Smart car near you soon, as the company introduces its first electric car the Fortwo Electric Drive for the 2013 model year.

FORBES: What The Smart Forstars Concept Car Says About The Company That Created It

The car is still electric, in that it has an electric motor which turns the wheels.

BBC: Hydrogen Honda arrives in the UK

In a neighboring hall at the Paris show, Audi is teasing visitors with the eTron Spyder, a convertible version of the high-performance electric sports car the Volkswagen AG luxury subsidiary first previewed at the Frankfurt Motor Show a year ago.

MSN: A battery beats at the heart of these muscle cars

Ferrari's experimental 599 has the car's V12 engine coupled to a seven-speed automated gearbox which also contains an electric motor.

ECONOMIST: Fast cars will go even faster with electric power