The train engine, built in the 1950s, broke down on the first day of shooting and set back production. In addition, the production crew ordered 12 boxcars to use and they were expensive to rent. When they came in from Texas, they were covered in graffiti. At first, they thought it would be too much to paint over, but then they couldn't get clearance (from the artists!) to leave the graffiti as is, so they ended up painting over it.