BACKING OUT OF THE DRIVEWAY, MY CAR ACCELERATED, SKID ON ICE AND HIT A TREE. I PUT IT IN DRIVE BUT AGAIN THE CAR WENT OUT OF CONTROL. I COULD NOT CONTROL ITS SPEED, AND BRAKING WAS INEFFECTIVE. IT COULD NOT BE STOPPED. I WENT THROUGH THE BACK WALL OF OUR GARAGE, CAUSING GREAT DAMAGE.