The Wraith

Question: What did they use to create the sound of the Turbo's engine?

Question: Why didn't the sheriff do anything about Packard's gang? Surely someone must have wanted to file a complaint at some point? And if the sheriff isn't doing his job, why doesn't the state police step in?

Chosen answer: After the first race where Augie is killed the sheriff says "I've been waiting to catch you guys in the act. Been waiting and watching." So we can assume there were complaints made however the sheriff may not have had enough evidence to shut them down completly. As far as the state police, I'm not sure. May be a jurisdictional thing.

Mister Ed

Question: What are those devices we see disappear from the wraith's arm and after the second and third race supposed to be?

Mister Ed

Chosen answer: I believe they are markers to show how many people are left to take revenge on for his death.