The shot in the warehouse chase, where John Wick opens his door and the motorcycle hits it and goes flying over the top of it.
So they put a dummy on the bike, and they towed the dummy into the door, and then they did layer that with a bit of CGI just to kind of clear it up.
I wanted to do it really badly, but it was just sort of talked about, and the location and the circumstances were just better for us to actually use a dummy.