Alex is a shark and is trying to rip off his renters. When I went to pick up his car, he said "I'm not sure if anyone will be available to take the keys from you when you get back on Sunday at 7pm, so I'll send you a text to let you know if my friend will be available."
I get back EARLY on Sunday and call, text, and message him over RelayRides to confirm if someone will actually be at his house to pick up the keys. His car was parked at my house, just waiting around for somebody to let me know I would actually be able to return his keys and wouldn't be driving all the way out to his place just to sit there with no possibility of returning the car.
Add on to this the fact that he never gave me the name or contact information of the person, that he then quietly shafts me with a $125 late fee a week later, and, finally, that he is incredibly rude about the whole thing.