Five Easy Pieces (1970)

Continuity mistake: In the scene where Jack Nicholson finds the piano on the back of the moving truck, he uncovers it and tosses the tarp on the side of the truck. Over the next few shots, the tarp disappears and then reappears draped over the side of the truck. As well, the shots of Billy Green Bush taken from outside the vehicle show his hands gesticulating wildly, while the shots from inside the vehicle, from over his right shoulder, show his right hand calmly positioned on the upper right part of the wheel. This scene also contains a magically appearing chair. When Jack first finds the piano, he has to lean over to play, but a few shots later, he is seated comfortably on a straight-backed kitchen chair. (00:19:10)

Palm Apodaca: You know, I read where they, uh, invented this car that runs on, ummm... that runs on, ummm... when you boil water?
Terry: Steam.
Palm Apodaca: Right, steam. A car that you could ride around in and not cause a stink. But do you know they will not even let us have it? Can you believe it? Why? Man! He likes to create a stink! I mean, I've seen filth that you wouldn't believe. Ugh! What a stink! I don't even want to talk about it.