Can you imagine a whole bunch of segways on our roads and sidewalks? Please don't tell me you actually think its a good idea.....
Who would buy a 10K segway in Singapore? The poor ah-soh taking the MRT? The factory worker with a wife and kid? Of course not, only the rich guy with nothing else to do with his money! Look at the demographic of Segway buyers in the US, you seriously think they are for the poor and disadvantaged? Anybody else serious about having some proper transport for the family in that price range would opt for a motorbike instead.
Edits
Link here to blurb on intent of Segway -->
http://www.findarticles.com/p/articles/mi_m4021/is_2002_June_1/ai_88679060
It is an alternative to cars, not public transport.
Another link to Segway forum -->
http://www.segwaychat.com/forum/topic.asp?TOPIC_ID=1638
People are buying it as a lifestyle statement or because they are techno-freaks, not for serious transportation!