watch 01:27 The Loop (Movies) Do you like this video? Mark Nielsen was a story manager and crowds manager for Cars, and the associate producer of Cars 2. Trivia In Cars 2, a security officer with the name Mark Wheelsen can be seen. His name is parody of Nielsen's. Retrieved from "https://pixar.fandom.com/wiki/Mark_Nielsen?oldid=138088" Categories: Producers Community content is available under CC-BY-SA unless otherwise noted.