text: Even though the cars are smart enough to drive themselves they are not smart enough to drive on non-smart roads. In the late 1950s GM ,General Motors created a car that could run on a speacial track but the track was enbedded with an electrical cable that sent radio signals to the car. Therefore all roads would have to require upgrades and this is something that is too expensive. The passage says that the cars can't drive through traffic jams,road contruction and when the vehicle is around danger . So if the driver is not paying attention to the car , the road and others around it then how can the car ,the car would be unable to save itself from crashing. With this being said I believe driverless cars are dangerous and would be way to expensive.