Calvin College

Aimed at those with MS, spinal cord injuries, or complete paraplegics, the TheraTryke is a therapeutic and recreation recumbent bike that is designed to let riders use their hands, feet or a combination of both together to propel themselves forward.

The Jet Blade is a unique kind of personal watercraft that features three skis, a tilting front suspension system similar to that of a Piaggio MP3, and a 650cc engine. It aims to put the "ski" back into "jet ski" by offering a smooth and agile ride.