text: Third of all, The only problem is that there are laws prohibiting the uses and testing of driverless cars. Traffic laws are written with the assumption that the only safe car has a human driver in control at all time. California, Nevada, Florida, and the District of Columbia have led the country in allowing limited use of semi-autonomous cars. Manufacturers believe that more states will follow as soon as the cars are proven more reliably safe. Traffic laws will have to change, new laws will be needed in order to cover liability in the case of an accident. Automakers are still continuing with their work on the assumption that the problems ahead will be solved.