About 10 years ago, inventor Dean Kamen, in a much-anticipated introduction, brought his Segway to the public. Revered by the media and business-world celebrities as a total game-changer in urban planning, transportation, and daily life, the public ended up a bit crestfallen at what they actually saw. It looks like a glorified scooter, and even today, it's a rare sight to see anyone other than a mall security officer or tourist group plodding along on one.
So what went wrong? . . .