text: Second, it would be very expensive. Smart cars are expensive and these are even smarter cars. In the article, it said "Mercedes-Benz, Audi, and Nissan plan to have cars that can drive themselves by 2020." which are expensive branded vehicles and that makes driverless cars cost even more. The newer the more expensive. Also, if your driverless car needs repaired then it will be very expensive because not many mechanics will have the parts and the experience for these cars.