Today, while walking on the Internet, I found an interesting prototype of a new kind of roller skates, they look like this:

Outwardly, they resemble a wheelchair, divided into two parts, each half of which is attached to the legs and feet, such a mount creates the feeling of skiing.
The advantage of these skates can be considered a large "cross", so you will shake less on a rough road =)
Now the skates are at the final design stage, so they will (must) be available in June next year!
Source:
www.ohgizmo.com/2009/12/21/chariot-skates-combine-cycling-and-skiingBut of. website of this device:
www.chariotskates.comPS Translated as I could =)
UPD: Moved to “I'm healthy.”
PSS Maybe there is a more suitable section, I did not find = (