<i>Frequent travelers and members of rewards programs aren’t treated that differently</i><p>Um, actually we are. With Avis First (free to join) or Hertz Gold (last I knew there was a fee, but that may have changed), I take a shuttlebus to the rental car lot (or at the smaller airports, walk from the gate to the rental lot), look for my name on the message board, walk over to my car, get in, drive to the gate, show the attendant my license and I'm gone. In the really small airports (FSD or FWA for instance) it's literally 5 minutes from gate to road.<p>WRT Flightcar, that has absolultely no appeal to me as a car owner parking at an airport, or as a car renter. As a car owner, when I get back from a trip, I <i>really</i> want my car to be there so I can get home, I don't want to have to deal with my car not being there because the renter got stuck in traffic or had a change in plans.<p>As a renter (for both business and pleasure) I want to be able to have some flexibility in my rentals - if I want to extend my rental, I just visit the website and extend the rental. Would I be able to do that if the guy who's car I'm renting needs it back at a certain time? Also, how do I know that the car I'd be renting would be in decent running order?<p>I think that airport car rentals could use some disruption (for example more flexibility in refueling is nice, but I don't see that Silvercar really solves that problem), but I don't see these businesses doing it. Of course YMMV.