SpaceX thrusters just made a Tesla Roadster 'fly' (and Elon Musk's car is still out there in space)

Well, that was a memorable debut. Tesla unveiled its highly anticipated new Roadster last night (Oct. 16) with a spectacular stunt, using SpaceX thrusters to make the vehicle "fly." "This is not necessarily a safety-optimized car, OK?" Elon Musk, who runs both companies, said during the…