I see in the other reviews how people want to put deep meanings into this film. For me it's pretty simple.
The men in the mysterious black car don't harm Seth because they see themselves in Seth. The kid is a sociopath and he is going to grow up to kill. The driver asks, "Want a ride, Seth Dove?" The kid doesn't say, "No." He says, "Not yet." They don't harm him because they know that one day he'll join them. They recognize that he's one of them.
This film is about the birth of a cold-blooded serial killer.
The men in the mysterious black car don't harm Seth because they see themselves in Seth. The kid is a sociopath and he is going to grow up to kill. The driver asks, "Want a ride, Seth Dove?" The kid doesn't say, "No." He says, "Not yet." They don't harm him because they know that one day he'll join them. They recognize that he's one of them.
This film is about the birth of a cold-blooded serial killer.