Surely you are not suggesting that the horse rider decided to run the horse under the pickup truck. Why would she? Risk her life for what? Some mentioned that North Americans seem to have a lesser sense of self-preservation, but to intentionally steer the horse onto a way of a pickup truck?
Weird comment to make but ok.
The point was if your read, no body deliberately hits a horse or any animal or anything on the road.
This has nothing to do with North Americans as you put it.
What I think happened here is that the driver was in "I am the king of the road with a pickup, I can drive as fast as I want, wherever I want, and everyone else should get out of my way" set of mind. Given that he drove off like that simply proves the fact that hit the horse in that frame of mind.
So your saying this guy was driving like a North American, and claimed to be king of the world, and hit the horse and took off because he intentionally hit the horse?
There is NO evidence that would suggest he went out of his way and targeted the horse. IF you ever drove a car more than a week and out of your city, you would realize driving is not always as easy as it looks.
You can't blame North Americans, and you can't blame the driver without knowing what happened exactly.
Also, he was not charged with speeding, so I don't know how you figure he was driving like a North American as you put it.