Answer:
No. First the car's floor cannot be the reference point if the passenger is in the car. Let me give you an example.
Explanation:
An example of a reference point that is moving is when you look out the window of a car and notice that you are moving faster than the car next to you. The car next to you is moving, it is just moving slower than your car. You use that other car as a reference point to determine that your car is moving.
