Leelee Sobieski ended up filming two different romantic interludes, one with Steve Zahn and one with Paul Walker during the shooting and re-shooting of the film. Both scenes ended up getting cut.
In the ending where Rusty Nail's truck explodes, you can see a water tower behind the truck as it burns. The original intention was to have the truck hit the water tower and have the water come down and put the flames out so that it would be believable if Rusty Nail survived. However, time constraints kept the scene from being filmed. The water tower cost over $100,000.
As Lewis is looking at his map in the car, his finger follows the road from Red Rock past Green River and down SW. Director John Dahl's earlier motel based thriller was Red Rock West (1993).
In the climax, a crew member's hand-held two-way radio with red and green lights is sitting on top of an abandoned box/crate Lewis retrieves to rescue Fuller off the fence.
When Lewis and Fuller first make contact with Rusty Nail on the CB, as the camera cuts back and forth between Lewis and Fuller in the car, the door lock on Lewis's side of the car is alternately up and down.
When Fuller first starts using the CB, a shot of the face plate of the CB shows that the radio is on ch 19 and the band selector is set to USB (upper side band). It should be set to AM for the ch 19 that truckers use.
Rusty Nail: Now they know what it feels like... to be the butt-end of the joke. Your palms sweating, your face burning up. Now they know what it's like... to be the fucking punch line.
Rusty Nail is alive. The body the police found in the truck was not his. Earlier in the movie he hit the Ice truck driven by the guy who returned Lewis's Mastercard. At the end of the movie, the police say the body is that of "some guy who drove for an Ice company in Wyoming." Rusty Nail kept the body of the guy he hit, then switched bodies to make his getaway.