text: The driverless cars would also be cheaper and more earth-friendly in the long run. In chapter 1, it says, "The car he (Sergey Brin) foresees would use half the fuel of today's taxis..." which is a big statement. In North America gas prices are constantly fluctuating but are generally considered to be quite high. These cars, using half the gas of current taxis, will be a good deal versus current gas prices. If these cars do become the majority of transportation, some people will also stop buying their own cars, which is a huge investment. Plus, using less gas will lead to a healthier enviornment. Driverless cars will eliminate the hefty gas-usage and large money investments.