Shut off while driving, will not start and there is white smoke coming from under the hood?

So, coming home from New Orleans my car stopped on the side of the road shut off completely and white smoke was coming from the passenger side under the hood! Looked and saw the radiator hose popped out of the cap replaced that. Noticed the belt popped, put that back on notices the alternator also broke replaced that. Now today we see the crankshaft position sponsor is coming on the reader the mechanic checks and sure enough it was burnt off. Now I'm home waiting for daylight to go change that. But last night we went to O'reily's right before closing to get the crankshaft position sensor and when we returned to the car with the piece it didn't fit like it was the wrong piece then after checking the old piece, we saw it was not the same one. The piece looks like the camshaft sensor. Could it be both? When you try and start it you can hear the belt spinning, that's all.

I'm stuck on the side of the road.