British singer James Blunt has been forced to return an electric Mini Cooper - after he ran it into the ground. The You're Beautiful star was lent the environmentally friendly vehicle to try out, but bosses insisted he gave the vehicle back after accidentally damaging the car. The Mini, one of only two in the world, was developed by U.S. space agency NASA and runs on state-of-the-art lithium-ion batteries. Blunt says, "It was the fastest car I've ever been in - totally silent, like a stealth Mini. That was part of the problem. "I didn't crash it but I did break it and I was going too fast. I'm sure they've learnt from my mistakes."