I was driving my 96 Buick Regal when all of the sudden the check engine light started flashing and the car died. Luckily i was right in front of my buddy's house and i was able to coast into his driveway. But my problem now is, right after that happened, i put the car in park and tried to restart it. When i turned it over thick white smoke started pouring out of the tailpipe. I dont know what is wrong with it. It turns over just fine, but it refuses to start. Can someone please help me??