Change Details

1. Get any car 2. Turn engine on and watch the exhaust smoke either appear or not appear 3 Turn engine off if the exhaust smoke appeared and turn the engine back You now have no exhaust smoke ^

1. Get any car 2. Turn engine on and watch the exhaust smoke 3 Turn engine off 4. Turn engine on You now have no exhaust smoke ^

1. Get any car 2. Turn engine on and watch the exhaust smoke either appear or not appear 3 Turn engine off 34. Turn engine off if the exhaust smoke appeared and turn the engine backe on You now have no exhaust smoke ^