I tried out FlightCar the last time I was in SFO for a conference. Basically lets you rent other people's cars while they were traveling. They pick you up in a

I tried out FlightCar the last time I was in SFO for a conference. Basically lets you rent other people's cars while they were traveling. They pick you up in a black car to their lot and gave me a Toyota Camry with a GPS for $22 a day. Was quite impressed.