FlightCar (YC W13) launches in Boston, bringing free airport parking and low cost rental cars to Logan Airport

Tired of paying to park at the airport? If you don’t mind letting a stranger drive your car while you’re gone, you could make money instead — and even get a free car wash.

That’s the idea behind FlightCar, a new car-sharing business set to start operating at Logan International Airport at the end of the month. The San Francisco-based company, started by three teenagers earlier this year, plans to rent departing airline passengers’ cars out of an East Boston parking lot. If someone rents a car, the owner gets a cut of the earnings ­— $10 per day for newer cars — as well as a free car wash and ride to the airport in a Lincoln Town Car.

If no one rents the car, well, the parking is still free.