In the scene in the race where Alec and Raj are being chased by the truck, the windshield is there in the close-ups and point-of-view from inside the truck, but gone in the wide shots.
Lip movement doesn't match dialog at one point where Raj tells Alec about the race.
In the scene when Alec finally finds the Black in the desert valley with the other horses and whistles for him, there is a modern woman in a sleeveless flowered top with frizzy blonde hair sitting on a rock behind him in a few shots.