text: Driverless cars should continue to be developed because they use less fuel than a taxi. Google cofounder, Sergey Brin, foresees driverless cars using half the fuel of today's taxis. This would help the environment tremendously. In large cities such as New York city, taxis are a huge part of the public transit system. This many cars use a lot of fuel, and cutting that amount in half would be very beneficial to the environment.