Driverless Cars is really a marvelous discovery of this decades. In our childhood we dream that one day it will come when a car will run without a driver, and now it really happens. The driverless car use some variety of technologies to detect the road. They are rader, laser lights, GPS system and computor vision. The vital feature of this car is, it stop traffic collisions which reduce death and injuries. At present the driverless cars are being tested in the suburbs but when it will compleate its test in busy city then it will become commercialy available. At present polluted carbon-dioxide cover the atmosphere all over the world and the major of it is created by the four wheelers. It is mostly created by the drivers, keeping the car on start mood at traffic signals, testing the cars unnecessarily etc. I belief that this driverless car will reduce thus pollution.