What is the reason for the high water temperature in the car?

There is a lack of antifreeze in the engine cooling system, and there are leaks in the engine.

Immediately find a safe place to park, but do not turn off the engine immediately. Keep the engine idling to continue dissipating heat, and at the same time open the engine cover to increase the heat dissipation rate. When the water temperature is too high, do not try to continue driving to avoid major machine damage.