Mixed breed is a separate category from pit. Your example dog would be under mixed breed.
Pit bulls are estimated to only be about 6% of the dog popualtion, and account for 70% of fatal bites.
By your logic pitbulls would have to be 70% of owned dogs, and let me tell you walking around 7 in 10 dogs are not pitbulls.
My friend met a sweet pitbull, and then it bit her on the neck. They aren’t just strong, they are unpredictable as hell.
GTA VI is probably already written, so should be fine.
You can get smaller pick-ups with the same size bed that can easily haul the machines he needs. These giant monstrosities are just useless overkill.