Imagine a segway scooter. Now imagine tilting its wheel down, holding it while you sit in a wheelchair, and allowing it to drag you along. This is what this temporary electric drive for any wheelchair is all about.
A little bulky for our taste but check it out for yourself.
From the article:
The IWA, or Independent Wheelchair Assist, adds a temporary electric drive to any chair.Read more here: http://ow.ly/1knxat