Technically, a service like that already does exist - if you're not sure about a web address, you can always try using a search engine.

From what i've seen, the two main issues with it are it breaking existing systems, and the fact that its being forced on everyone. Now, if it were a service, in the sense of you being able to opt to use it, that would be a different case.

"Segway's price, low speed and tightened spending"

Low speed?!?! AFAIAC, doing more than 10mph on one of those things would mean a large number of underpants changes along the way.