The Wankel did make it to market, but it took years and almost bankrupted Mazda, who were finally able to get the seal technology it required.
The Wankel design was revolutionary, but seal technology was not advanced enough for production... not until a junkyard’s worth of experimentation by Mazda and false starts with crappy cars MX2 & 3 I think it was...
Finally, by the RX7, they got it right.
This guy should pop one of these into his own car and drive it himself. I would!
Fingers crossed...
Maybe they finally got it "right" but it's still a commercial failure.