I see something similar in yellow bobbing about in Lancashire. Run your wheelchair into the back and twist and go.

Some of our members here help with charities that do these types of conversions don't they? Mr Angry and NABD spring to mind

I went back for a second look, and the chap's fitted a single car seat in the front and twin bench seat in the back, and added a back wall!
Not sure whether this makes it a car now and therefore should have seat belts, but bloody cheap motoring if you ask me.