suppose you are standing on the sidewalk. Describe the direction of your motion relative to the car and the plane.
To describe the direction of your motion relative to the car and the plane, I would need some additional information. Please provide details such as whether you are moving or stationary, whether the car and the plane are also moving or stationary, and the specific positions of each object relative to each other.
Once I have these details, I can explain how to determine the direction of motion relative to the car and the plane.