I used to work in an auto shop for a short time. It wasn't a short time because I ended up getting fired for dropping a car, but I did live in fear of dropping a car every single day. As long as you're careful, this won't happen. There are specific places on the car that are made for the lift to attach to. Except for an earthquake, nothing will knock it down when done right. Still, the stress of knowing that this could the be outcome of my mistake made me not want to work there anymore. That and my boss said I always smelled like weed.
Imagine walking up to the mechanic to check on your car and seeing this. I wouldn't know what to say. I'm such a nice guy I'd probably just tell them that it's OK.