The Segway like a lot of early smartphones failed to live up to consumer expectations...
The world wasn't ready for the Segway PT in 2001, it was very expensive, struggled with it's perception, wasn't needed and fell foul of regulation in many countries where it was banned from sidewalks.
Now it's 2015 and a lot has changed for the better, while Segway still exists the Ninebot has solved a lot of it's original problems:
Unfortunately everything else about transport seems to be getting worse.
A recent report released by the Treasury Department has found that traffic congestion wastes 1.9 Billion Gallons of gas each year in the US alone. According to the Treasury Department’s findings, congested roads and traffic jams cost American drivers more than $100 billion a year in wasted fuel and lost time. If you live in one of the 10 US cities with the worst traffic jams you can probably relate!