text: The cars that Sergey Brin forsees would use, "half the fuel of today's taxis and offer far more flexibility than a bus." (p1) Driverless cars have been well tested and have been modified repeatedly. "Google has had cars that could drive independently under specific conditions since 2009." (p2) Google'sdriverless cars have driven more than half a million miles without a crash. Although Google's cars are not truly driverless, meaning they still alert the driver to take over when pulling in and out of driveways or dealing with complicated traffic issues, such as navigating through roadwork or accidents, not crashing when having driven half a million miles is miraculous.