Segways on our ways

I used these a couple of times,
I must say they were great fun, but definetly take some getting used to, they can go at a decent speed (12.5mph), i used them when i was in florence.

I really doubt however that they will ever become very popular due to the massive cost of them.

Not sure I would call 12.5 mph a decent speed, it will be slower than the average nodder so just more clutter in bike lanes, and another reason to travel sensibly as part of traffic on the road rather than a marginalised bike lane.