A hit-and-run took place at Bonnaroo on Friday. No, a golf cart didn't go rogue, knocking out a corn-dog vendor. Instead, Dax Shepard and Kristen Bell, stars of the coming comedy film Hit and Run, made an appearance at the Bonnaroo Cinema Tent.

Hit and Run, set for release on Aug. 24, has the same producer as Wedding Crashers (Andrew Panay), and it was both written and directed by Dax Shepard. (David Palmer also has a directing credit.)

The movie is about Charlie Bronson (Dax Shepard), a nice guy with a questionable past who risks everything when he busts out of the witness-protection program to deliver his fiance (Kristen Bell) to Los Angeles to seize a once-in-a-lifetime opportunity, according to its Bonnaroo blurb.

Hit and Run also stars Tom Arnold as a federal agent chasing the couple and a gang led by Hangover star Bradley Cooper.

Shepard and Bell popped into the media tent at Bonnaroo to talk about the film and participate in a Q-and-A session after a special screening at the Bonnaroo Cinema Tent. If the movie is anything like the press conference they participated in, it is bound to be a riot.

For Shepard, the reason to run the movie at Bonnaroo was simple. According to Shepard, he thought, How can we try to ruin the festival for two hours?

In the hot Tennessee heat, I doubt many thought their day ruined by a two-hour movie break inside an air-conditioned tent.

Kristen Bell had some other words about the festival, though. Everyone here is cooler than I am, she said, laughing as she petted Carrie the Dancing Dog. Bell broke out in a smile when she walked onstage and saw she was going to be seated next to the dancing golden retriever. (While Bell was obviously ecstatic to be petting the dog the whole time, her reaction was nowhere near the level of the famous sloth incident.)

Both stars agreed the movie is action-packed, with Bell explaining that Shepard is obsessed with the machinery that can be found in the film. The actress laughed as she noted that in the couples' garage is machinery I don't understand and [am] not allowed to touch.

It's a car-chase comedy, Shepard said.

So, Bell concluded, Don't come see it if you don't like jokes.