This site rocks, AND rolls, No really.... Disabled Explorers say.
"We want to be your resource for vehicle enhanced access to the backcountry. We are disabled ourselves and this effort grew from our inability to find the gear, training, trail guides and other things we needed from the perspective of the mobility impaired. Please ask if you don’t see what you need, come out to one of our free events or better yet join us on the trail and see why it is so important to get into the wilderness and protect it for the future."
I went for a look and checked out the bio of Corbin B, a member of the Board of Directors and a paraplegic off road explorer. Corbin's bio is here and the forum is here. There is alot of excellent info on both pages and I'm also going to set perma links from here. I really want to get that accessible tent!