A hand-trike assembly - complete with an additional wheel, drive, and hand-powered element - that can be attached to wheelchairs created by LDS Charities has been developed by a group of six engineering students at Brigham Young University (BYU). The hand trike, which lets people pedal with their hands instead of their feet, will enable users to travel greater distances with less effort. Having a wheelchair is a great start, but a lot of people still need to go 5 or 10 kilometers a day to get to the market or get to work. That kind of distance is difficult, exhausting and time-consuming using a traditional wheelchair. LDS Charities asked the students to design and prototype a trike that is durable, maneuverable, multi-geared to handle varied terrain and built with parts that are easily replaceable.