watch 01:18 The Loop (Movies) Do you like this video? Speedy Comet is a character in Cars 3. Cars 3 Speedy Comet is a veteran racer who competes in the Piston Cup. He is number 21 and is sponsored by Blinkr. He ends up being replaced Ryan Laney mid-season. Retrieved from "https://pixar.fandom.com/wiki/Speedy_Comet?oldid=183804" Categories: Cars 3 Characters Community content is available under CC-BY-SA unless otherwise noted.