>If the car stops every time the map differs from the sensors, then I just give you a nonsensical map and you go nowhere. ..Yeah, as opposed to driving nonsens

>If the car stops every time the map differs from the sensors, then I just give you a nonsensical map and you go nowhere. ..Yeah, as opposed to driving nonsensically? I think I'll take the car that defaults to whatever won't kill everyone around me. >Or if the map is outdated, which will of course happen. Assuming the cars download new maps on a regular basis, I'd consider this situation pretty unlikely on any official road or highway (unless we are to accept that in certain locations every car will consistently stop driving). However, if this situation were to occur, option one: sync with the latest map data; failing that (network issues, etc.), option two: pull to the side of the road, stop, and enter manual mode. >If sensors say the road turns and you go with the sensors, what happens to the navigation? Eventually they become irreconcilable. The car will completely lose track of where it actually is, having only local (and perhaps some limited amount of historical) sensor data. What do you mean by this? Google Maps and most GPS navigation systems recalculate routes perfectly fine.