A few weeks ago I rode a train downtown, and ended up standing on the flexi part between cars, with nothing to hang onto. I spent part of the ride leaning back into the wall, but part standing free, and it's exactly as you describe.
I was being a bit of a smartass in my earlier post, but actually I think your idea makes a lot of sense. Everyday life does provide interesting opportunities for advancement! ;-)
Thx for thinking a little out of the box and sharing it.
I too think the hands free bus riding is a great idea for powder beginners and was just kidding around with my comments.