I think “on blocks” means a car’s brakes/axles are resting on cinder blocks and the wheels are removed? Though I could also imagine a scenario where the vehicl

I think “on blocks” means a car’s brakes/axles are resting on cinder blocks and the wheels are removed? Though I could also imagine a scenario where the vehicle is on 4 jack stands with the wheels still on and if the autopilot came on it could injur or kill someone trying to work on it.