There is one place where all cars are electric... can you guess?

Electric cars may still play second fiddle to petrol here on Earth, but they've dominated the Martian driving scene for more than a decade.

NASA's tiny Sojourner rover hit the red dirt in 1997, followed by the golf-cart-size twins Spirit and Opportunity in 2004. And last August, the 1-ton Curiosity rover dropped in to determine whether Mars could ever have supported microbial life.

All three generations of six-wheeled NASA rovers have used electric power systems of various design and complexity to find their way around the Red Planet.
there is water on Mars