a plastic monocoque body useful with small vehicles , such as lawn and garden tractors . a lower fiberglass reinforced plastic frame member is bonded to two upper body members to form a monocoque body . the assembly incorporates attaching , pivot and support structures for the engine , transaxle and drive wheels , steerable front wheels , steering mechanism , clutch and brake pedals and control linkages , shift and throttle controls and linkages , adjustable mower deck , adjustable seat and battery . through utilizing the net shape manufacturing process , no metal skeleton is required , thereby reducing the expense and complexity of manufacture , assembly and paint operations .