One-bag, carry-on, light travel tips, techniques, and gear

Why not go the easy route? If you must pack an 80-pound monster and pay extortionate overweight fees you can now at least avoid dragging the beast. LiveLuggage mpw offers motorized luggage. From London’s Daily Mail:

Powered by a rechargeable 12-volt battery pack in the base, the case can cover a mile-and-a-half fully loaded.
Each has a laser-etched serial number, so that if lost, the finder can contact its makers, Live Luggage, who email or text the owner.
The case, which has a plug-in charger, similar to that of a mobile phone, works by providing varying power to the wheels, depending on how hard the user pulls it.
Pressure sensors built into the handle monitor how hard the case is pulled.

The wheel motors switch on the moment you tug on the handle
The engines then provide torque to compensate. So as the user walks, it follows them as though it weighs nothing.