Peter was really great and punctual about helping us transfer to and from the Seattle airport. All around nice guy. The car itself is a little old but very clean and runs great (Saabs are known for easily lasting hundreds of thousands of miles).
Only reason I would hesitate to rent again is the cost. The amount Peter gets is entirely fair (hence the 5 stars) but I am annoyed at the surcharges from RelayRides. They take 25% of the price posted (so Peter gets less) and then charge me another 25% on top of the price I agreed to pay. They are double-dipping and so for every $100 spent on the service, car owners like Peter only get $60 and RelayRides gets $40. It's excessive so I probably won't do it again.