That is borrowing a phrase from Arthur Marget, of course I do not mean mph:
A San Francisco-based company is putting yet another spin on the Washington area’s sharing economy, giving travelers flying out of Dulles International Airport free parking and a car wash in exchange for permission to rent their cars to other drivers.
FlightCar launches Wednesday at Dulles and two other U.S. airports. Participating travelers can drop off their cars at a designated lot near Dulles. In exchange for letting FlightCar offer a vehicle for rent, the travelers receive free parking, a Town Car ride to the airport, a car wash and per-mile payment if the vehicle is rented — to a pre-screened driver — while they’re away.
There is more here.