FlightCar, a peer-to-peer car-sharing company that offers free airport parking, has announced the launch of its new Business Traveler service. This service allows business travelers to earn up to 50 cents per driven mile when they rent their car to other travelers.

“While many of our car-sharing customers love the option of free airport parking, we’ve had a lot of requests from members who are business travelers for an additional option to get cheap parking rates, yet a higher mileage reimbursement,” said Rujul Zaparde, FlightCar CEO and founder. “So, we are answering the demand and giving frequent business travelers who treat their parking as a business expense, an opportunity to turn their unused vehicle parked at the airport into a personal revenue generator.”

FlightCar introduced its car-sharing service last February and has grown to more than 13,000 members at its airport locations in San Francisco, Boston and Los Angeles.