As a frequent traveller I admit I almost swooned when I saw this prototype luggage. It's a carry-on that charges your gadgets via the kinetic energy generated by rolling it around. Gone are the days of stalking the one or two outlets in the terminal waiting for a chance to charge up during a layover.

The concept is simple. The more you roll, the more you charge. It makes that dash from your arrival gate to your departure gate a dual-purpose endeavor.

The case has a big gear on the outside of the wheel and a smaller one on the inside. As you wheel it around it generates and stores kinetic energy in a battery. Your gadget can be plugged into a portable battery that is fed by the charged battery; an LED light on the top of the case indicates how much power you've got.

Designer Jung Inyoung's luggage is not only useful but looks pretty cool as well. It has a shiny hard-shelled case that will be the envy of your fellow passengers as you rock up to the gate and show off its secret capabilities.

It's like the KITT of carry-ons.

While this concept case may not provide a full charge, it's likely you'll generate enough power on a trip through any terminal to at least get you through that last minute presentation that needs tweaking or to check your social networking accounts.

When this carry-on finally hits the market I think it will complete me.

Inhabitat, via CNet