I wouldn't even call this one revolutionary..
It doesn't have anything that hasn't been done before..
laminar flow wing : P51
pusher prop?? been doing those since the very beginning of aviation
diesel? had them in the 20ies
fuselage shape? nothing fancy there
construction materials?? Rutan
The propeller? not new either..
it's all been done before.
Just the performance claims are revolutionary.. But nothing to back those up.
I bet if they scaled up Rutan's LongEZ they would have a better plane then the celery 500L
Look at the Beechcaft Starship , a Rutan design.
Not a commercial success, but a great plane nonetheless
Scale that up even more.. and You'll probably get the same performance as the Celery 500.. with better flight characteristics (lower stall speeds , better recovery)