This disclosure provides to a ride vehicle for used in an amusement attraction. The ride vehicle mounts a structure upon a hydraulically-actuated motion base, so that the passenger holding structure may be articulated about one or more axes as the vehicle moves. Thus, this "simulator ride" carries passengers through three-dimensional scenery and articulates the passenger holding structure in synchronism with motions of the ride vehicle, the motions of moving show sets, which are external to the vehicle, sound, projection and other effects. The ride vehicle is programmably-controlled, and derives electrical power from a track mounted power bus to drive vehicle hydraulics, which drive motion base actuation, steering and vehicle velocity.The hydraulic control system uses an electric pump to charge a high-pressure accumulator with hydraulic power from a 480-volt power supply, a manifold to regulate the supply of hydraulic energy to motion base and steering actuators and a hydraulic motor, and a low-pressure accumulator that aids in regenerative braking. Using these elements, the computerized vehicle-control system controls the hydraulically-actuated elements to provide synchronized motions of the vehicle and passenger holding structure, and other special effects, in accordance with a selected one of a plurality of ride programs.