AFTER BACKING OUT OF MY GARAGE, I LEFT THE CAR RUNNING IN MY DRIVEWAY. THE CAR WAS STATIONARY IN THE DRIVEWAY FOR ABOUT 5 MINUTES. AFTER WHICH TIME THE CAR ACCELERATED THROUGH MY GARAGE AND HIT ME, PINNING ME AGAINST THE WALL OF MY GARAGE FOR ABOUT 5 MINUTES. THE ACCELERATION THEN SUBSIDED AND THE CAR SLIGHTLY BACKED UP AND REMAINED STATIONARY GIVING ME ENOUGH ROOM TO WEDGE OUT BETWEEN MY CAR AND THE GARAGE WALL. I'VE BEEN HAVING INTERMITTENT ISSUES WITH ACCELERATION. AT TIMES THE VEHICLE SURGES WHEN I STEP ON THE ACCELERATOR AND OTHER TIMES THE RPMS SWING WAY UP AND THE VEHILCE LAGS CREATING A DANGEROUS SITUATION WHEN TRYING TO CHANGE LANES ON THE HIGHWAY AT FASTER SPEEDS.