After the trailer debuted, a rumor stated that Erik Estrada, star of the original CHiPs (1977), blasted the trailer as "pure trash". Estrada later tweeted he never said that, and said, "Just watched the CHIPS trailer and laughed. Dax Shepard and Michael Peña are great. Cool stunts too."
Although they play hero and villain respectively in this film, Michael Peña and Vincent D'Onofrio have both appeared in the Marvel Cinematic Universe. Peña played Luis in Ant-Man (2015) and D'Onofrio played two characters(-ish): the villain Kingpin in the series Daredevil (2015) and in the movie Adventures in Babysitting (1987), the main character, Sara (played by Maia Brewton), is obsessed with Thor and thinks D'Onofrio's character is him in disguise. She offers her Thor helmet to him as a thank you for helping them to which he smiles, gives it back to her, and responds "hey kid...I got one of these at home."
Jason Ellis: one of the stunt men Dax Shepard punches. In a later segment on Ellis' radio show, Ellis told Shepard that he would've been very upset if he'd waited around for hours, only to have Shepard pull his punches.