The most dangerous phase is when a car can say to a driver who is doing something else, "oh, we're barrelling along a road at 100kmph (I forget what that is in cubits) and suddenly there's something wrong and you have to take over. This is not always going to be possible. People can't just take over in the milliseconds that might be needed to respond correctly. It's got to be all or nothing at that point.
The most dangerous phase is when a car can say to a driver who is doing something else, "oh, we're barrelling along a road at 100kmph (I forget what that is in cubits) and suddenly there's something wrong and you have to take over. This is not always going to be possible. People can't just take over in the milliseconds that might be needed to respond correctly. It's got to be all or nothing at that point.