pull over, but don't turn off the engine immediately! Because the temperature of the coolant is already very high, and the cooling capacity has reached the limit, if the engine is turned off immediately, the boiling coolant will stop circulating (for most engines, the water pump is driven by the crankshaft). Of course, if it is an electronic water pump engine, it will be better. If the temperature is too high, it will not be cooled, and the engine will be unbearable. If the engine is idling for a while, the continuous circulating coolant can still reduce the influence of high temperature on the engine.