A CONAN staffer is learning the rules of the road, with a little help from stars of the upcoming film "Ride Along 2", Kevin Hart and Ice Cube. The comedy stars joined Conan host on Tuesday with Conan’s staffers, Diana Chang, who is practicing to get her driver’s license.

What starts innocently enough — O’Brien tells her not to let anyone pass her. Hart refuses to wear his seat belt but got lectured by Cube, pointing out "Tupac was one of the biggest thugs I know, and he always wore his seat belt". — soon devolves into total madness which resulted in a wild ride that left them in high spirits — literally.

The four also visited a medical marijuana shop, where they seemingly purchased products and then joked about "hotboxing" while driving around town.

Ride Along 2 action comedy film directed by Tim Story. It is the sequel to the 2014 film Ride Along. The film stars Ice Cube, Kevin Hart, Tika Sumpter, Benjamin Bratt, Olivia Munn, and Ken Jeong. Universal Pictures will release the film on January 15, 2016.

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Conan, Ice cube, Kevin hart