George Clooney recently auctioned off his prized 2008 Tesla "Signature 100" Roadster for charity. The all-electric roadster was the eighth Tesla ever produced and snagged more than $100,000 for the Satellite Sentinel Project, a charity Clooney co-founded that tries to prevent war between Southern and Northern Sudan. He also snagged one of the first-ever Tango T600s, a super-thin electric car that goes for about $108,000.