Looks like Frontier flyers @ DEN can get some benefits at this new parking facility:

http://www.businesswire.com/news/hom...irport-Parking
http://www.canopyairportparking.com/index.php

The concept looks interesting but it feels like they are trying to do every "green" thing they could think of instead of just picking one or 2 "green" technologies and doing them well. Having 3 different types of shuttle bus means they need mechanics that can service all 3 types.