US Patent 8360507 Apparatus for reducing drag on a vehicle

An apparatus for reducing drag on a moving vehicle includes various combinations of a movable segments and a swing arm. Each combination is adapted to be mounted to the rear of the vehicle with a fixed portion being positioned forward of the movable segment upon extraction. The movable segments have a retracted position and an extended position and may be biased to the retracted position. The movable segments deploy to the extended position when moving above a predetermined velocity and returns to a retracted position when moving below the predetermined velocity.