French inventor reveals electric skates

A French inventor has unveiled a new kind of "personal transportation system" at a gadget show in Las Vegas, USA.

The Rollkers look like electric roller skates and make you feel like you're walking on a moving platform, like an airport "travelator".

The rolling shoes let users to walk twice as fast as normal.

They're still a prototype but the inventor, Paul Chavand, hopes to have perfected the shoes within two years.

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