Stop in for a cup of coffee

Well, it might have been innocent enough. He must have thought it was for sale, I have done that with cars for sale.....
Maybe, but unless the car is clearly signed as “For Sale” the right to inspect does not exist.

It would be the same as randomly opening someone’s front door to see what the inside of their house looked like because you might want to buy it...even though it is not listed as “For Sale”.