I often get asked about adding this shot to a film. I have tried it a few times without the results I wanted. The best result I had was on a doorway dolly, red epic, cooke 20-100mm zoom. I had one follow focus on the focus ring, zoom was pulled off the lens.
I'm not sure if maybe I was trying to go to fast, maybe covering to much distance I don't know, but it seamed like syncing the dolly speed to zoom speed was near impossible. Anybody have successful experience with this shot?