text: Google has been working on these kinds of cars since 2009. Their cars have driven more than half a million miles without a crash. Google cars arent not driverless ; the car alerts the driver when dealling with complicated traffic. Different companies are making computer driven cars. In 1950s , General Motors created a concept car that could run on a special test track. The track was embedded with an electrical cable to a receiver on the car. The problem with smart-roads is that it would be to expensive to upgrade the roads. The problem with driverless car is that if the car got into an accedent who is at fault the operater of the car or the manufacture.