The Vanishing Car

Imagine driving through an empty highway at night, passing desolate rest areas with no sign of life. Suddenly, you spot an old, dusty car parked at the edge of the lot. But when you approach, you find something strange: the car is empty, and the door is unlocked. Then, you hear footsteps behind you. Turning around, you realize you’re not alone. The person who drove that car is nowhere to be found, but the sound of their footsteps follows you as if they’re right behind you. Who was driving that car, and where did they go?