never mind the liabilities,
What about the stench some nasty person might accidentally diffuse into the seats, or the drool from someone's little pet dog with the overactive toungue slung all over every surface except the glass, where direct contact with its snoot (snout?) does the job, or in lieu of the dog, a similar effect is caused by their sticky-handed children. Just saying. How can one be confident the vehicle won't be trashed? There are some things no amount of cleaning can remove.
No, the only way to come out ahead on this is to install onstar into a well maintained beater you keep for emergencies, and rent that one out with a disclaimer and renter indemnifies owner.
