The world's fastest shoes: Moonwalkers - electric-powered roller skates that increase walking speed by 250% - are available on Kickstarter | gagadget.com
Amazon.com : Razor Jetts Heel Wheels for Kids Ages 8+ - Easily Removable and Replaceable Spark Pads, Fits Shoe Sizes U.S. Youth 12 through Adult 12, For Riders up to 176 lbs : Sports & Outdoors