NASCAR's top conspiracy theories

Juan Pablo Montoya's No. 42 car is caught speeding past Mark Martin's No. 5 car in the Brickyard pit. Both have been the focus of stock car conspiracy theorists. Jamie Squire/Getty Images

Pssst ... hey you. Yeah, I'm talking to you, standing on the grassy knoll with the slide rule in one pocket and a Blu-ray copy of "JFK" in the other.