The following video is part of our "Motley Fool Conversations" series, in which analyst John Reeves and advisor David Meier discuss topics across the investing world.

David and John are looking for potential multibaggers for their 10-Bagger portfolio. Westport Innovations, a company that designs fuel technologies to run on natural gas, is on their watchlist, and is being seriously considered as a stock selection. David loves the company's commitment to research and development. He also feels that the trend toward more refueling stations on heavily trafficked highways will benefit the company enormously. Ultimately, both John and David feel that Westport Innovations does have multibagger potential over the next five years.

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This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.