Driverless cars would be very useful; it would mean I can use my time in the car in a more useful way, like reading. Now I have to use the train for that. But

Driverless cars would be very useful; it would mean I can use my time in the car in a more useful way, like reading. Now I have to use the train for that. But maybe that's also the risk of driverless cars: it would make them more attractive than they should be, because they're really too inefficient to be able to afford them as society's main form of transportation.