"Whats vapor lock?"
Fuel boils, or turns to vapor, in the fuel lines due to high temps in the engine compartment.
Used to be a common problem in the summer, but not so much anymore, global warming notwithstanding.
200 deg. at altitude isn't unusual.
Try driving a 911 through the Eisenhower Tunnel at 9,500 ft with the OIL TEMP gauge creeping past 240 if you want to get the willies.
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