This falls under the category of Ancient Pointless Trivia.
The movie "Pet Semetary" isn't horrible for a Stephen King adaptation. In other words, it's not a good movie but it's not the worst, either.
But the setup is terrible. This guy moves into a house in the country. There is a road nearby. Big rigs zoom down this road day and night.
Why didn't he notice that when he was looking to move into the house? Why doesn't he build a fence? Why doesn't he put a leash on the cat? Why doesn't he put a leash on his child? Why did he move into such a dangerous house anyway? Why can't he get a county ordinance passed to stop the trucks? Has Stephen King never heard or Business routes?
I know, I know, there wouldn't be a story without trucks barreling down the road. Not to mention that Stephen King and ham-handed plots are pretty much synonymous.
This one just feels a little sloppier than others.
Still, it's not the worst Stephen King story with murderous trucks. That honor goes to "Maximum Overdrive."