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.