We have a three-bay garage and only two cars. Someone in our neighborhood is looking for a place to stash his sports car where he can occasionally do work on it. Not sure if this is a terrible idea for insurance or other reasons or if it would be a good way to make a little cash. I'm planning to ask him how often he will be on the property, how much he wants to pay, and what kind of work he will be doing--what else should I think about/ask?