DRIVER SIDE SRS AIRBAG DEPLOYED SPONTANEOUSLY. NOT RELATED TO ANY COLLISION OR ACCIDENT. CAR WAS STOPPED, IN PARK, WHEN DRIVER SIDE AIRBAG DEPLOYED BANGING INTO THE DRIVER LEFT SIDE AND ARM. IF THE CAR HAD NOT BEEN STOPPED, THE DRIVER PROBABLY WOULD HAVE LOST CONTROL OF THE CAR AND AN ACCIDENT WOULD HAVE OCCURRED. DRIVER SUSTAINED BRUISE TO THE LEFT SIDE AND LEFT ARM