I blew my heatercore last night on the way home from work. I knew instantly and smoke started blowing into my interior. I opened all the windows, and had to drive about 1 to 2 minutes back to my house from where it blew. I personally forgot to look at my temperature guage! It was driving at about 40- 10km/h for about 1 to 2 minutes with some coolant leaking on my foot. Do you think that this was enough time for the engine to overheat?