risks
Evidently you didn't bother to log on to RelayRides's website. It clearly says that you are covered with $1,000,000 of liability insurance covering damage, liability, and theft, with no out-of-pocket costs. As far as the camera ticket, if you can prove in court that you rented out the car during that time, I have to believe the judge will dismiss the case against you. Besides, the location of the car is always tracked by OnStar's satellites and they won't rent it to anyone whose identity is not confirmed. Also, the car owner can deny anyone from renting, for any reason upon reviewing the renter's profile and reviews from other car owners.
Some of you guys fret about everything! Sheesh. Don't participate if you're that cynical. My guess is lots of people will sign up.