Volkswagen (OTC:VLKA.Y) is halfway through a 10-year plan with an audacious goal: To surpass Toyota (NYSE:TM) and General Motors (NYSE:GM) to become the largest-selling automaker in the world. 

VW has already made huge gains in places like China, but its growth plan has hit a snag here in the U.S., where sales are actually down. In this video, Fool.com contributor John Rosevear looks at VW's latest plan to turn that around -- and at why the German giant's efforts might leave it even further behind its rivals.