Belt-driven bicycle with a compact design that, like STRiDA, featured a belt drive. Other folding-bike manufacturers that have implemented a belt drive include U.S. company Bike Friday and Netherlands-based Bernds. In 2007, Gates Corporation developed a high-modulus synchronous belt and sprocket system called the Carbon Drive System. The belt’s pitch allowed for lower tension requirements to help prevent skipping. Lightweight, patent-pending sprockets have mud ports, openings under each tooth, which work to slough off debris. In 2009, an increasing number of bicycle companies, including Trek and "f"8 Cycles, offered belt-driven bicycles. While builders initially focused on single-speeds and internal hubs, in early
Star Trek VI: The Undiscovered Country Spock and Scott inspect the torpedoes. Some shots were reordered or replaced, with wide-angle shots replacing close angles and vice versa. The special features included a commentary track with Meyer and Flinn, featurettes detailing the special effects, production, and historical inspiration of the film, and a tribute to actor DeForest Kelley. The film's original theatrical cut was released on Blu-ray Disc in May 2009 to coincide with the new "Star Trek" feature, along with the other five films featuring the original crew in "Star Trek: Original Motion Picture Collection". "The Undiscovered Country" was remastered in 1080p high-definition from the 2000