From Wikipedia:
"The attraction's 37 Mystic Magneto-Electric Carriages are automated guided vehicles that can travel freely throughout the mansion, receiving directional instruction via radio-frequency identification technology in the floor and Wi-Fi."
This is exactly how Kong works except the vehicles are SO large they cannot go wandering all over the place. So if you think that Kong has a track then those attractions have tracks too, with options.
The comment about the Kong vehicles provokes a funny image.
You're in a truck but, instead of going into Kong, it veers way off course (typical UNI ride where something goes wrong) and the truck begins rolling down the walkways and driving around the park. After a very long and interesting tour (with dialogue presented by the AA drivers), the truck finally reattains its track position and resumes the normal ride path.
Truly wireless vehicles.