In old movies in the car is standing still and the screen's outside the windows. What's the technical term?

Question

In older movies, you can tell that that car is standing still but the images are just "flying by" on a screen outside the car windows. What is the technical or "Hollywood" term for this?

Answer 1

Back-projection...

"I will tell you. Many pictures I have shot against the wishes of the studio totally on location. But the moment you go inside the studio, it is dangerous to go out again. The moment you hop from that studio to the wilds of Utah, you must artificialize nature. You must somehow integrate nature into your story. So you use back projection. For instance, there in Written on the Wind, the whole story is artificial. The back projection has to be this way. "Artificial" used to be a negative word. But every artist today must proceed with a certain artificiality. " Douglas Sirk

Answer 2

rear projection