It is also missing a foot rest.

There is often a great big gap between what is available (meets basic requirements) and what is possible (crabchair). It is the space that is to boring for large companies to bother with.

edit: It does have a foot rest. I did not see it on this page but it is shown on the designboom link in the article. https://www.designboom.com/technology/autonomous-wheelchair-...