Deliberate mistake: The condition of Pete's coat/body after being struck by the car was not consistent with what would be expected from such an impact. The absence of distinct or vivid blood was presumably deliberate for the sake of viewers. But Pete's left legs were rammed by the car's front bumper and hood; a horse struck in such a manner would not have "bowed" rear legs. The way Pete's body was displayed did not look real - probably because it wasn't real. Pete was beyond recognition because it wasn't Pete. (01:29:10)
Deliberate mistake: The car's headlights are angled differently. After the car hit Pete, its headlights were angled upwards (more toward the sky than the road). This enabled a clearer view of Charlie when he approached and knelt next to Pete's head. A later, more distant view shows the headlights shining about waist-high, which would be more typical. (01:29:00 - 01:30:10)