i was leaving work yesterday and 2 miles down the road my car started sounding like a helicopter, after 15 seconds i started seing white smoke coming through the hood and exhaust. so i immediately stopped in a parking lot and turned off the car fearing the worst. i got the car towed to the house last night. i never attempted to start the car until i got to the mechanics house and then the car would not start. i know i shouldn't have even tried to start the car but at the time there was not enough muscles to push the car on the drive way. so the question is, do you guys think that it is a blown head gasket? any information will be appreciated.