I ran a lithium battery powered scooter on the playa this year. I had no trouble with the electronics, and a simple, heavy gearing design made short work of silica (unlike nylon bike parts!!). PM me for brand info.
I'm ambulatory and therefore not 100% reliant on mobility devices, but I did notice that the playa presents a few hidden features which the casual passerby might overlook, such as:
Craters or dustbowls. It doesn't take much to reduce the mobility of small wheels, and six or eight feet of sand trap is just as deadly to mobility as fried shorts. I had the luxury of standing up and gently nudging the scooter to firm ground when the need arose.
Glorious washboards. That flat enticing playa looks pretty good from a large diameter wheeled bicycle, or the crow's nest of an art car, but for a smaller diameter wheel, these washboards qualify for the finals. Only on the uphill turn of a narrow logging road could they be more interesting. If rough bouncing is a problem for your condition (as mine) a scooter is out of the question. Plus, there's the added advantage of:
Disguising dust. Playa dust will coat every inch of the playa with the amazing flatness delusion. It is not flat, or smooth, in any stretch. Take your scooter across the esplanade (I did!!) and write your own travelogue of survival and triumph, but the story won't be flat.
However, as a vulnerable and labile disabled person I heartily encourage other disabled folks to attend burning man. You are safer at bm than anywhere else, including your own home. Make the investment. Prepare as best you can. Whatever goes wrong at burning man will be the best thing that ever went right in your life. Burning man isn't for the needy, however. Too many "hippies" have jaded some of the vision of giving, while making what remains very much more precious. Prepare, make your way, pitch in. Perhaps a simple recipe for successful negotiation of the playa. But the responsibility for success belongs to each of us alone.
For my part, although I can walk I cannot carry far. For the last three years I've used my pimped out bicycle for anonymity, stability and carrying. For ambulatory disabled, pushing a bicycle is a great way to burn righteously and minimally at little expense. And if your condition allows you to ride occasionally, you're ready to go, and what a blast. Also, walking a bicycle elicits so many offers of help from strangers at bm if it doesn't bring tears to your eyes you're a crocodile. This is a weird world, so I go to bm, where my head fits - even if my body doesn't.
Best burn ever 2013!
"Ring your bell even if you don't sell a clam. " Samuel Clemons