How to create running background like Hill Climb games?

Hi everyone, I want to ask how to make the background in the game run without limit? because when I make a game like hill climb, it will stop at the end of the screen, not continuing the game.

I think you can create GIF like that and run in background.

Get some inspiration from Scott’s examples here!searchin/app-inventor-developers-library/canvas$20scroll|sort:date