these cars and on the ground are these small, little wires, producers have told us to be very, very caful>> detroit to half way around the world to hong kong, we found mark in the exact same outfit when wet lefhim in the motor city. >> is that the same blood from detroit? >> yes, it is. i never washed it off. >> i stayed in the same wardrobe. >> so why not just shoot the entire movie here? well, let's just say movie making in hong kong poses huge challenges. >> we have hoards of people and phoneses and a lot of paparazzi and stuff like that. in her off time, nicola paints faces and mark's assistant gets an optimus prime makeover while mark and rocsi talk football. >> kind of sort of. >> one thing i haven't done in hong kong since i got here. upon. >> well, you shouldn't play fwoobl in hong kong. >> who cares she can't throw. she'd make a great quarterback. a cute one. >> indeed she does. >> i'll take mark on my team. >> speaking of football, we all know bruno mars became a super bowl superstar with his halftime performance, but do you know not long before that show he suffered a family tr