R.L. Stine's The Haunting Hour

Season 1

Episode 17: Catching Cold

A boy becomes obsessed with catching a mysterious ice cream truck called "Kreamy Kold Ice Cream" that seems to haunt his neighborhood. He manages to stop the ice cream truck. But in the twist ending, He learns that to get all the ice cream he wants off that truck, his pay is himself and he ends up stuck inside the Ice cream truck with his soul, until someone else gets inside.