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Laugh if you want, and I doubt that a dishwasher will get any warmer than sous vide. But there was a book published years ago entitled "Manifold Destiny." There were actual recipes that were wrapped in foil and were placed on top of an engine area to achieve a sufficient temperature to cook whatever.

>[S]lap a ham steak under the hood of your car, hit the gas, and drive until you reach delicious -- which is in approximately fifty miles, depending on traffic.