Continuity mistake: At the end of the scene where Speed and crew are ambushed by Cruncher Block in the mountains, Speed is pointing a gun at Cruncher Block. When Spritle says "Take him away, boys", we see Speed in the background lowering his gun, but, in the next shot, the gun is raised again.
Factual error: In the first scene, the math problem is wrong. It says "Grave buys a bag of 240 jellybeans. There are 35 yellow ones, 52 red ones, 63 green ones, 26 white ones, 41 blue ones, and 40 black ones." That is 257 jellybeans not 240. Don't ask why I stopped and did that math.