Abstract: A toy wheeled vehicle has a chassis which can be adapted to receive almost any style of vehicle body. The vehicle contains an elongated coiled spring enclosed within a tube having a substantially rectangular cross section. The vehicle has a keyhole aligned with the tube in the trunk area. The key hole and the tube have a guideway slot formed therein. This slot, together with the rectangular cross section, insures a properly aligned key, at the time of key insertion. The key includes a pair of leaf spring-like, spaced parallel plate members joined on each end and held in a separated position by a spacer post or pin positioned near the operational or handle end of the key. When the key is inserted into the tube, the coiled spring is compressed. A latch on the key fits and locks into a keeper in the tube to hold the spring in the compressed condition.