I have been loolkign for a tow vehicle and posted such in the towing vehicle tread. Well I was going to go out of state and all of a sudden I found a vehicle about 30 miles from my home at a GM Deale...
A friend of mine just put a deposit on a car. It is completely refundable, non binding pending his daughter taking a look at it. As I mentioned before, most of the time these token deposits are fully refundable.
As for the person who replaces the fuel after a test drive, you gotta be the only one on the planet who does this.