A company backed by the CIA that calls itself Arevo is hoping to lead a revolution in manufacturing that uses 3D printing to build products in a more efficient and cost-effective manner. The Silicon Valley, California startup recently picked up $12.5 million in funding to help pursue this goal and has revealed an impressive proof-of-concept product to help demonstrate its capabilities. That product is a carbon fiber bike frame that could give us a glimpse of the future for the cycling industry.