if bottle is parked then that fast is stationary
hardware_accelerated is accelerated. engine is powered_device. internal_combustion_engine is fuel_powered_device. pop_bottle is bottle. parked_vehicle_state is self_powered_vehicle. when_car is parked_speed_zero. fast_car is single. fuel_powered_device is mechanical_device. groundspeed is speed. bottle is non_powered_device.