Rollkers

A French inventor has unveiled what he is claiming is a "personal transportation system" at the Consumer Electronics Show in Las Vegas.
The Rollkers look like electric roller skates and aim to give the same sensation as so-called airport travelators, allowing users to walk twice as fast as normal, around 10 kph (6.2 mph)

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Rollkers are the world's first electronic "under shoes." What that means is they're a personal transportation device that consists of motorized wheels that attach to your soles, allowing you to walk faster, up to seven miles per hour.

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Battery life is rated at an optimistic full hour of use, and that's with a regenerative braking system that actually produces a little bit of extra power with every step. But real-world performance will depend on what speed you have them set at using a wirelessly connected app, and whether you're heading downhill, or trying to walk up a mountain. There's no word on when the Rollkers will finally be available—they've been in development for about eight years now—but their creator is optimistic that he can get them to the market with a price tag of around 400 euros sometime in the next few years. Fingers crossed.

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