Layover:

-- Maybe there’s a sub-demon or demi-fiend who needs to put in his time before he can become a full demon (like Clarence’s 2nd Class rank in “It’s a Wonderful Life”). He gets a generous amount of hazing from the other, higher-ranking demons. They force him to wear a ridiculous fast food restaurant uniform (like ‘Hot Dog on a Stick’ at the Mall food court) with a big yellow “TRAINEE” name tag.

-- Maybe one of the vehicles on the highway to Hell is an automobile transport truck that is carrying nothing but black hearses.