From danish filmmaker Jorgen Leth, the scene appears in his art movie 66 Scenes from America which was filmed in 1981.
Jorgen Leth did not know Warhol, but he was a bit obsessed with him so he definitely wanted to have him in his movie. Friends told Leth that he “should forget about it” and that he could never even approach Warhol.
Leth just told Warhol about his movie and the idea of having Andy being one of the 66 scenes along with the highly “symbolic” burger. Warhol immediately liked the idea and agreed to the scene. Andy liked the scene as he said because it was such a real scene, something he would like to do.
So Andy Warhol agreed to come for filming a few days later.