I’ve never driven a car. I’ve also never ridden a scooter, a moped, a Segwayor even one of those stupid “hoverboard” things with the combustible batteries. But I do travel a lot, usually with a bit of luggage, and one thing I absolutely hate are those long walks across an airport terminal. So when the Modobag, a $1,199 piece of kit that bills itself as the world’s first motorized suitcase hit Indiegogo, I was intrigued. Would it get me across an airport faster, or would I just crash into a luggage cart and get myself arrested?