Fully automated and free of charge , it connects all four terminals , the two international terminal garages , the BART station , and the airport 's Rental Car Center .
AirTrain is the airport 's landside people - mover system .
Fully automated and free of charge , AirTrain connects all four terminals , the two international terminal garages , the BART station , and the airport 's Rental Car Center .
AirTrain is the airport 's landside people - mover system .