This $999 rolling backpack took its inventor nearly 30 years to develop

10:50 AM ET Tue, 13 Sept 2016
Melvin McCoy developed the M.U.L.E. in the 1980s to help hikers and backpackers cart and carry heavy loads. McCoy walked nearly 3,000 miles across the U.S. with it but couldn't convince investors to invest $175,000 in it.