Continuity mistake: When Dan was walking along the side of his grain truck toward Allen's car, the grain truck's length was much shorter (about half) compared to its length on the open road. Also, the vertical loops on the side of the grain truck turned into straight flat rails. (00:14:16 - 00:17:25)
Continuity mistake: When Allen was following Don's grain truck, there was a tarp or cover over the truck's bed, but in the aerial view of Allen riding in the back of the truck, there was no cover over the cargo area. (00:13:41 - 00:16:46)