The engine just stopped working mid traffics shifted to neutral automatically- almost causing a serious accident on a busy interstate . Brought to the mechanic, readings stated misfiring cylinders as engine seized and slipped. Tried fixing issue for $8300.00. Then after trying to fix it with no luck, cylinder 5 and seven were stuck and could not be repaired. Cost of labor to out engine back together was $4600.00 plus $400 to tow it to a dealer. Not only life threatening but also wallet draining with no warning. Will never buy a Cadillac again. This is a serious threat for those driving in it and for those who come across it when something happens.