You should be able to find a bunch of info on Segway Polo on the
SegwayChat website. I think it is mostly out west, and I know that Steve Wozniak (apple computers) has a "stable" of Segways and is a regular participant in the games. Here are some pictures (at least a year old) of a
Seg Polo game during halftime on the field at a Minnesota Vikings football game. While I've never tried it, it does look like a lot of fun.
More info at the official
Segway HT Polo website.
And an article in the
New Zealand Herald about the first ever international Segway Polo tournament, the "Woz Challenge Cup".
And here is a
Segway Polo video for your enjoyment!
And
another good article about Woz and Segway Polo.
And there's plenty more if you want to search ...