Originally Posted by gooselee

Just some points of clarification:
- The landside train that goes from North/South Terminals (and domestic baggage claim) to the Rental Car Center is called the "SkyTrain." The "Plane Train" is the underground one that runs airside between concourses.
- Unless arriving on a precleared flight with no checked bags, you can't use the Plane Train to exit out of the domestic terminal where the SkyTrain is located. Int'l flights and int'l arriving baggage dump out of the International Terminal (connected to Concourse F) and you can't go back airside without a connecting flight (nd re-checking bags). International Terminal to rental car center is serviced only by a shuttle van.