Method and system providing enhanced mechanical stability in an electrically-powered vehicle. The system includes an electrical power subsystem arranged on a vehicle structure. At least two counter-rotating energy storage flywheels are mounted to a flywheel mounting plate. Torque sensors are arranged between the flywheel mounting plate and the vehicle structure for sensing a net torque on the vehicle resulting from the pair of flywheels and generating a torque signal indicative thereof. A vehicle attitude sensor produces an attitude signal and detects disturbances to the vehicle. A vehicle attitude actuator and electronic processing equipment are connected to the pair of counter-rotating energy storage flywheels, the torque sensors, the vehicle attitude sensor, the vehicle attitude actuator, and the electrical power subsystem. The electronic processing equipment processes the attitude signal and the torque signal to provide a control signal to the vehicle attitude actuator for reducing the net torque on the vehicle. The system also adjustably controls an attitude of the vehicle in response to the output of the sensors and counteracts disturbances resulting from the at least two counter-rotating energy storage flywheels.