Use an RFID system similar to how EZPass works. Or they can use a lGPS system that supplements GPS data for increased accuracy and decreased latency. Or they c

Use an RFID system similar to how EZPass works. Or they can use a lGPS system that supplements GPS data for increased accuracy and decreased latency. Or they can factor in odometer data into the algorithm. Those are just three ideas off the top of my head. There are certainly technical challenges with all of this stuff, but they are driving some of the most technically sophisticated machines on the planet.