WHILE WORKING IN THE DRIVERS SIDE FLOOR AREA OF THE VEHICLE MY SHIRT/BELT ACTIVATED THE DRIVERS SIDE POWER SEAT CONTROL. THE SEAT ADVANCED FORWARD TO THE END OF THE SEATS TRAVEL AND PINNING ME UNDER THE DRIVERS SIDE UNDER DASHBOARD AREA OF THE CAR. MY LEFT UPPER ARM AND LEFT WRIST WERE ENTRAPPED IN AROUND THE BRAKE PEDAL, MY RIGHT ARM WAS ENTRAPPED BY IN THE GAS PEDAL AREA, THE THROTTLE PUNCTURED MY RIGHT WRIST. I WAS UNABLE TO SUMMONS HELP, AND AFTER ABOUT 2 HOURS WAS NEAR EXHAUSTION, AND TO FREE MYSELF I WAS FORCED TO SELF CAUSE INJURES TO MY LEFT ELBOW, LEFT UPPER ARM, AND RIGHT ARM TO FREE MYSELF FROM UNDER THE DRIVERS SIDE UNDER DASH AREA OF THE CAR. I SUSTAIN SEVERAL CUTS ON MY ARMS, CHEST, AND BACK. EMERGENCY ROOM EXAMINATIONS AND TESTS SHOWED POSSIBLE RIB FRACTURES, DEEP BRUISING OF THE CHEST, BACK, AND LEFT UPPER ARM AND LEFT ELBOW, INTERCOSTAL CHEST WALL MUSCLES. I FEEL THE CAUSE OF THIS EVENT WAS THE LOCATION OF THE POWER SEAT SWITCH IN THE FRONT OF THE SEAT TOWARDS THE OUTER SIDE OF THE DRIVERS SEAT. ANY SERVICE ACTIVITIES ON THE DRIVERS SIDE FLOOR AREA IS AT HIGH RISK OF ENTRAPPING THE INDIVIDUAL OF ENTRAPMENT BY THE POWER DRIVERS SEAT.