text: First, todays trffic laws are "... written with the assumption that the only safe cars has a human driver in control at all times.", which means that the manufacturers must make a car thta keeps the driver, passenger, and any pedestrians safe. Manufacturers believe that once these cars prove more reliably safe that more states will grow onto the idea of driverless cars. Having driverless cars is a good idea because they also will only use around half of the fuel used in todays average taxi. So far Google has had these cars drive half a million miles without a single crash!