Compressed Air Technology is now widely preferred for research by different industries for developing different drives for different purposes. The Compressed Air Technology is quite simple. If we compress normal air into a cylinder the air would hold some energy within it. This energy can be utilized for useful purposes. When this compressed air expands, the energy is released to do work. So this energy in compressed air can also be utilized to displace a piston. This is the basic working principle of the Air Driven Engine. It uses the expansion of compressed air to drive the pistons of the engine. So an Air Driven Engine is basically a pneumatic actuator that creates useful work by expanding compressed air. This work provided by the air is utilized to supply power to the crankshaft of the engine. In the case of an Air Driven Engine, there is no combustion taking place within the engine. So it is non-polluting and less dangerous. It requires lighter metal only since it does not have to withstand elevated temperatures. We know that world is facing fuel crisis now. All kinds of conventional fuel sources of fuel are on the verge of exhaustion. Gasoline which has been the main source of fuel for the history of cars is becoming more and more expensive and impractical. These factors are leading car manufacturers to develop car fuelled by alternative energy. The cost is not only the problem it is also damaging the environment eventually. Out of all alternatives air powered car is one possible alternative. Air powered Cars run on compressed air instead of gasoline. This car is powered by 2 gas cylinder engines. Compressed air is stored in glass or fiber tank at a pressure of approximately 4351 psi. This would most likely be the evolution of zero pollution cars.