NOVELTY - A central computer processor processes input and outputs electrical signals through appropriate electronics to a functional component. An energy management program providing unit acquires, stores, processes and dispenses energy derived from and used by electrical, mechanical and hydraulic components to propel the vehicle. A braking and deceleration program providing unit captures inertial energy contained in the vehicle while the vehicle is in motion. An inertial stabilization function derived from a gyroscope (10) inhibits vehicle roll over accidents.    USE - Hydraulically driven propulsion and energy recovery system for ground based, wheeled motor vehicle.    ADVANTAGE - Maximizes energy savings while propelling vehicle using hydraulic motor. Flywheel serves as energy storage system and is inexpensive, never degrades, uses conventional technology in design, and never needs to be replaced during useful life of vehicle. Engine is small, thus running infrequently and reducing emissions to small fraction of emissions of conventional vehicle at peak efficiency speed. Speed of vehicle is controlled by high efficiency hydraulic motor with speed that is varied without degradation of efficiency resulting in required vehicle speed. Captures kinetic energy spent in accelerating vehicle, and recaptures and stores energy in flywheel to be used again in ensuing acceleration less only efficiency loss of components. Energy used to climb hill is returned as vehicle goes downhill, except for small component efficiency losses. Energy derived from commercial grid may be used to provide extensive vehicle range without use of any fuel. Captures energy even from bumps in road. Angle stops mounted on gyroscope inhibit vehicle roll over accidents, thus saving lives.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following:    (1) an energy management program;    (2) the inertial energy captured from a moving vehicle; and    (3) an inertial stabilization unit.    DESCRIPTION OF DRAWING(S) - The drawing shows a functional block diagram of the hydraulically driven propulsion and energy recovery system.    Gyroscope (10)    Computer (50)    Pitch gimbal actuator (86)    Roll gimbal actuator (94)    Gyro directional control valve signal (200)