When Hawk turns the radio back on for the last time, the truck is on a 2-lane road with a broken white line down the middle. In the very next shot, the truck is on a 3-lane road with a double yellow line and a broken white line.
In the opening scenes, Lincoln Hawk is shown washing his tractor rig and polishing the chrome hood ornament. In the next scene, he's driving his rig into and out of Michael's military academy, but it's obviously a different rig, with no hood ornament. The hood ornament returns in the subsequent scenes.
The entire time line of the movie is a hodgepodge....The story begins in Colorado with Hawk heading to California...at approx. 20:18 his truck is shown passing the south rim of the Grand Canyon in Arizona.....at approx. 24:43 he is seen driving by Monument Valley at the Arizona/Utah border....the abduction of Mike occurs at 37:20 in California and he has still not made it to Las Vegas.
Sylvester Stallone's character is credited as "Lincoln Hawk". However, when Mike finds the bundle of letters Lincoln has written to his wife, the envelope reads "Christina Hawks and Mike".
When Lincoln Hawk is announced as the last finalist, he sits in front of the truck with his right elbow wrapped in a towel. The shot cuts away, and when it comes back to Hawk, the towel is in his back pocket and he puts it on again.
When Bull punches Hawk in the nose during their final arm wrestling match, it should've disqualified him immediately.
In the scene where Hawks son is kidnapped by the grandads henchmen that would have been almost impossible for them to have known there whereabouts as they were traveling in a rig and could have been anywhere at any given time on there way back from Colorado to California..
As they drive away from the truck stop, they drive on the wrong side of the yellow line.
When Mike bolts from Lincoln's truck and dashes across the busy highway, putting his life in immediate danger, Lincoln apparently digs out his hat and puts it on before chasing him down.
When Mike is driving the white pick-up on the freeway, a shot of the inside of the cab shows no keys in the ignition.
When Mike takes the white pick-up and stops at the stop sign, his window is rolled down. When he takes off, his window is rolled up.
In semifinals it is clearly shown that Bull Harley beats Harry Boscoe. Moreover, the announcer clearly states that Mad Dog Maddison goes through to the finals. Yet, when the finals start, Mad Dog is not in it, but Harry Boscoe is.
When Hawk and his son are walking to the final match, the audio used for his son is from the speech he gave his father in the previous scene. He says, "You weren't talking about me, you were talking about you," although the audio is lowered.
At the beginning of the movie, a long shot down the military academy's driveway. The palm trees and desert plants along the edges don't grow in the Colorado mountains.