I think the Segway is a dangerous accident waiting to happen. You try to step off holding the handle, it either jumps around like a startled horse, or tries to run away. You can't just put it down - it'll do violent things and endanger those around you.

Bump a curb or a trash can, it goes wild trying to recover, circling violently or spinning a wheel.

Just google 'Segway fails' and enjoy hours of shocking screwups. Here: https://www.youtube.com/watch?v=GII7QZy2GHM

It's exhausting to ride, difficult to master, hazardous on sidewalks or city streets. As an insurer, I'd ban it.

So no, it never 'took off'. For good reason.