The 2011 Supercross series comes to an end next weekend with the Finals at Las Vegas. Four riders have a chance at the title but the man with the championship directly in his sights is Ryan Villopoto. Villopoto won the Supercross race in Salt Lake City last weekend setting up the showdown between himself, Chad Reed, Ryan Dungey and James Stewart. We also talk with Racer X Online Editor Jason “Weege” Weingandt who opens our eyes about the competition set up for Las Vegas next weekend including some insight into Stewart's troubles this year. Is the Stewart Era over? If you're a Supercross fan, you can't afford to miss this analysis! Listen…