Could this be a bad sensor? You mentioned the oil temp suddenly skyrocketed to 245F. It everything was normal, and then the temp suddenly increased that could be a sensor issue. If something else was broken (like a crack somewhere, etc), then I would think you'd see temps slowly and steadily going up, as opposed to suddenly shooting up. There was no fluid underneath the car?
Whatever it ends up being this is not normal. You should have it fixed under warranty.
Whatever it ends up being this is not normal. You should have it fixed under warranty.