For the most part, "R.I.P.D." is about two dudes, Ryan Reynolds and Jeff Bridges, that hunt the spirits that haunt to world and refuse to move on, but to walk around among the humans, the two supernatural cops need special avatars so they go unnoticed. That's where supermodel Marissa Miller comes in.
Miller performed a stunt involving a bus by herself, and the featurette above gives you a look into that tricky—and slightly uncomfortable—process.
"R.I.P.D." opens in theaters on July 19th.