While we may be stuck waiting until 2008 to see GM's self-driving car, US drivers may soon be able to sit back and let Toyota's Prius do the parking for them, as drivers in the UK and Japan can already do, using a $700 "parking assist" option. With the option, drivers need only sit back and control the speed of the car with the brake pedal while the car takes control of the wheel and maneuvers itself into place. According to Toyota, 70% of the vehicle's owners in Britain have chosen the option. Availability in the US hasn't been announced yet, only that it should arrive "soon."