Actually, slang, you might wanna try the inline skates. Get around a lot faster, with, well, okay, not LESS effort, but different effort. Could be ideal for you.
I don't know if you've done this before.
Also, they are much less costly than the Segway. And you don't need to recharge them every couple of miles.
I've actually considered it from time to time (and was once able to make a fairly effective trip up and down one of the hallways here at work), but am relatively fearful of injury, especially now that I saw the most recent x-rays of my nearly healed hand ...
Work up the design on the turbo kit, anyway. I'll bet there'll be a demand for it ...