I bought this short story for my Kindle before I realized it was located in the short story collection Bazaar of Bad Dreams. At least now I can still get my SK fix, even when I don't have an ink-and-paper book with me.
Mr King has a thing about cars in his works. We all know that Christine just wanted to be loved, and a muddy station wagon at a rest stop just wanted to eat. Is that so wrong? There is no moral judgement or societal pronouncement in this story; it's just a fun little read. Pete Simmons gets left behind by the "big kids", so he goes exploring. When he finds the secret entrance and the liquor stash at an abandoned rest stop, our young hero gets drunk and sleeps it off. In the meantime, the aforementioned wagon shows up, and patiently waits for lunch to arrive.
As with 99% of King's short stories, just put reality in a holding pattern for a little while, and enjoy the creative, if slightly disturbed, mind of my favorite author.