The world's fastest shoe promises to increase your walking speed to 7mph - but they'll cost $1,399

Robotic engineers have unveiled what they claim are the world's fastest shoes - footwear designed with eight wheels that increase walking speeds by 250 percent. Called Moonwalkers, they strap around your shoes and propel you forward using tiny electric motors that power weight wheels, mimicking that of roller skates. The shoes are the brainchild of a team of robotics engineers at Shift Robotics, which thought of the idea when the founder started walking to work and realized powered shoes would dramatically cut his commute by more than half. This is because it increases walking speeds from the average three miles per hour up to seven miles per hour. The team markets the tech, which retails for $1,399, as for those'who have the need for speed' and see's Moonwalkers as the future of walking.