Travis Watkins, an engineering student, has designed a wheelchair that could enable the disabled to stay mobile even in environments previously not possible. These wheelchairs could roam across uneven, rocky and even sandy terrain. The wheelchairs are made of a sturdy two-wheeled platform on which sits the chair. The off-road wheelchair kit costs $4,495 and the tray that can be attached costs $695. Rehab Ideas, an offshoot of the University of South Florida, is behind the marketing of this new product that might give the disabled a new lease on life. Professor Stephen Sunderrao, the head of Rehab Ideas, has been encouraging students to come up with inventions that could help the disabled.