text: Another reason is that, what if we do get the cars. If we get the cars whole bunch of laws will be changed. If they change the laws on cars what would happen to the people who still drive themselves without anyone else driving them. "...if traffic laws change, then laws will be needed in order to cover liabillty in the case of an acciedent (paragraph 9, lines 9-11). So if they change laws then people would have to learn a whole bunch of different laws.