The Modobag measures 22 x 14 x 9 inches -- just the right size to fit into the overhead bins on most aircraft. That's key, since it won't do you much good if you can't keep it with you past check-in. The bag can officially accommodate a rider up to 260 pounds, though the company says if you can fit on it comfortably you should be good to ride. To use it, you just need to open the front panel, pull the handle up and switch the bag's motor on. Push a small lever on the right to accelerate, and grip the brake with your left to stop. That's it: There's no special instruction needed to figure out the Modobag. However, it would be a good idea to practice a bit before taking it to the airport, as slamming into a ticket kiosk is not the ideal way to start your vacation.

For those situations where you can't ride the Modobag, it can be easily turned around and pulled by its handle. In fact, it's a normal piece of luggage in a lot of ways. There's a large interior compartment that can accommodate a few nights' worth of clothing, and side pockets to slip your laptop and phone into while you ride. 

Though the Modobag can fit in the cabins on most planes, there still might come a time when you must check your luggage; always a risky proposition, especially when the Modobag costs so much. For that reason you can order one with GPRS-GSM tracking, allowing you to peep your bag's location on a map. Are you on a plane but the bag is still somewhere in the terminal? Did the baggage handlers decide to take the Modobag for a spin? You'll know if your luggage has gone on a trip without you just by checking the app -- and even have it send you a proximity alert when it travels too far.

But you're going to want to keep the Modobag around. It's nice to be able to get off your feet and let your bag do the work of getting you places, whether it's in an airport terminal or on a college campus. I did notice my legs got a bit fatigued after a few minutes of riding, probably from trying to keep my feet on the small pegs. But you won't be riding long enough for it to be a problem, and it's a minor concern compared to a pair of tired feet. The seat itself is comfortable, and I didn't feel like I was going to fall off it, Engadget reports.