"Disabled since 2009" you say. Just let us know what you need help with. I am sure we can help you get riding.
A year or so back, somebody posted a touching story about a blind boy who got a bike for a gift. The hitch was: it was one of those "trailer" bikes - no front wheel, it hitches onto the adult bike in front of it. The boy felt it over and, if I recall rightly, wanted to know where the rest of the bike was.
I was moved by this, and having inventors in the family and in my blood, I wanted to help. I couldn't come up with anything but the below article. So I passed it on to somebody who knew of the boy's family and hoped they followed up on it:
This guy is blind. Like, REALLY blind. And he rides a mountain bike on trails and stuff. There's always a way.
So, like I say, you tell us what you have to work around - we'll help you get on a motorized bike.