Who likes physics?

[allchopin]

Not at all. This is what I am trying to say all the time. The pressure around a moving object will be different compared to a stationary object, because there are fewer "air molecules" hitting the object.

No, what I mean is that not moving, the pressure outside the plane will be less than inside the plane, while the car will be equal.  This added outward-acting force on the plane door would make it act slightly different.