Nike Wants to Put a Treadmill in Your Shoes

Following its 3D-printed shoes and recycled shoebox materials comes Nike's latest innovation: a treadmill inside your shoes. In a newly filed patent, the invention looks to utilize a "rotatable conveyor element" in the sole of your shoe to make it easier to put on. The concept also describes "an upper configured to form a space between the upper and the insole," which is "configured to admit and secure a foot of a wearer." The would-be conveyer belt will be "configured to rotatably engage a body...