That makes sense why you got it from "Titanic". Maybe I didn't get motion sickness, but I seem to get it with the way the camera moved so I assumed it was motion sickness.
I really enjoyed this movie and I already want to see it again!
Giovanni Ribisi looks like the real Alvin Karpis if you have ever seen a picture of him. Everyone was well cast in that film, though they took some liberties with events, but that's usually what happens in these kinds of films.