My husband travels weekly for work and uses Indy Park Ride Fly. They are about 1/2 mile from airport. They keep your car in an gated, locked parking lot, buses transport you as soon as you arrive to drop off your car, and then when you return, just call them as soon as you land, and they come and pick you up and take you to your car which is then warm, running and waiting for you. I'm not sure of the cost...but after so many times you get free stays there (your car does, that is). It is nice not having to wait for the right bus (there are several, based upon where you end up finding a place), or finding your car, etc in the public parking lot. I recommend it, but he usually has a free one for our vacations, which is nice.