While driving on a two lane road around 45 mph the front driver's side wheel suddenly and repeatedly locked up causing the tire to skid and the steering to pull to the left. at the same time the car slowed very quickly to 5 mph and almost caused the driver behind me to slam into the back of my car. i was not applying the brake pedal during this incident. this is a very dangerous issue and needs to be investigated immediately. similar occurrences have happened about once per month in the past year. i have brought the car to hyundai service and explained the problem but they cannot duplicate the problem and "find nothing wrong". i have noticed that when the problem is happening if i turn off the esc the problem will go away and i can resume normal driving speed once again. *tr