Chuck Armstrong Chuck Armstrong is one of the racecars in the Piston Cup. His number is 33, and his sponsor is Mood Springs. He doesn't appear in the World of Cars Online, but his sponsor does. His pitty. Retrieved from "https://worldofcars.fandom.com/wiki/Chuck_Armstrong?oldid=20874" Categories: Piston Cup Racecars Movie Characters Cars Characters Characters Non-silent Characters Motor Speedway of the South Crashed Community content is available under CC-BY-SA unless otherwise noted.