This invention relates to a simulative driving game machine. A slide cylinder is driven in accordance with an acceleration of an accelerator or a deceleration of a brake to slide a connector provided at a lower rear position of a forward/backward moving unit along a guide rail and move a roller provided...http://www.google.com.tw/patents/US5951018?utm_source=gb-gplus-share專利 US5951018 - Simulative driving game machine