I was driving home from work, and the service esp system came on, right after that the rear car started swaying back and forth. when this started i removed my foot from the gas and the car kept doing this, and the car then spent around and i was going down the highway backwards for about 100 plus yards. my car came to rest in a ditch after hitting a marker post. my car has been in the shop twice before for this same problem and i was told that it was fixed, not the case because i could of lost my life on 09/18/2012. *tr