Tracked wheelchair.
https://diqn32j8nouaz.cloudfront.net...chair_fb24.jpg
Previously:
https://www.homemadetools.net/forum/...789#post202072
https://www.homemadetools.net/forum/...766#post213084
https://www.homemadetools.net/forum/...155#post165198
https://www.homemadetools.net/forum/...288#post161531
https://www.homemadetools.net/forum/...294#post142135
