Abstract: The present invention utilizes a power system based upon the use of compressed air. Each wheel of the vehicle is provided with a motor which is operated by compressed air from a respective storage tank through a system of valves and hydraulic or fluid pressure lines. The rotation of each wheel is also utilized to drive air compressors which may recapture some or all of the air which is exhausted from each motor and additionally to compress and store air brought in from outside of the vehicle during its motion. The present invention can be adapted for two-wheel drive or four-wheel drive.The drive units for each wheel are substantially identical. The rear units are mounted on fixed axles whereas the front units are mounted on an axle having a universal joint therein and each wheel is mounted by means of a ball joint to a suspension frame which in turn is secured to the vehicle frame.