The United States presidential state car (nicknamed "The Beast", "Cadillac One", "Limousine One", "First Car"; code named "Stagecoach") is the official state car of the President of the United States.

The current model of presidential state car is a unique Cadillac built upon a medium-duty truck platform. The car is equipped with many life-saving, offensive, and defensive measures, and is built to the United States Secret Service's standards. When riding in the state car, the president is cut off from the outside world, but has extensive 21st-century communications gear at hand. In a recent change, the vehicle bears standard Washington, D.C. license plates. The next generation of presidential state car is currently under development.