The car kept going? The thread? The thermostat? The dumb driver?
I was worried about a damaged head or head gasket and thought about doing a compression test myself or getting a leak-down test. My indie suggested it takes more than 3 minutes in the red zone to blow the HG. If my red light was accurate, I was dangerously overheated for only 43 seconds.
Lowering my car's resale value one track day at a time...