[Allen In Texas Hill Country]

The ONLY thing the dealer said so far is that they thought the AC pulley froze/locked. But they suspected there were several/many(?) other side effects. OK, so maybe that burned up the main belt but not for all the smoke?????

[dinodino]

Well, a seized A/C compressor would do it, and have about the same effect. Did the smoke smell like rubber, oil, or something else? What color was the smoke (white or black?)

[doorgunner69]

if you lost your belt and the water pump quit, the cooling system stopped. Depending on how much further you drove, the engine may have puked a few gaskets and the smoke was steam from coolant getting into the combustion chamber.

If that happened, it is new or rebuilt engine time. Big reasons for replacing belts on a regular schedule. Lose one and you can lose an engine.

[norwaypinesavage]

"But they suspected there were several/many(?) other side effects."

This is your cue to get out of there REALLY fast. It sounds to me like this happened fast enough that once the A/C pulley is spinning, three bucks of engine cleaning in a car wash is all you need.