[vladoh]

I think car sharing solutions like DriveNow (https://us.drive-now.com/how-it-works/) are much better for this case. Instead of giving your own car to somebody else, it is much easier to drive to the airport in one of the car sharing cars and drop it at the airport, where somebody else can use it to drive back to the city. DriveNow already allow free parking at the San Francisco airport and they are expanding very fast so I think it will be a really valuable service soon.