What must a driver do when their car's temperature gauge enters the red zone or the coolant warning light illuminates?

1. Safely stop the vehicle immediately, turn off the engine, let it cool completely, and never open the pressurized radiator cap while the engine is hot
2. Continue driving at high speed to force air through the radiator
3. Pour cold water immediately over the hot engine block
4. Remove the radiator cap with bare hands immediately while steam is escaping