CubCrafters Unveils Ducted Fan Leading Edge Slats - AVweb

Sorry, but your notion that parts count alone will increase cost is just not true. Modern cars have much higher parts counts and you get a lot more capability and reliability for the inflation adjusted dollar than you did with the 1960’s cars.

The tech here is not vaporware. What’s not going to improve things is continuing to do what we have been doing.

Finally, I’d appreciate your not putting words in my mouth. I don’t know where you got the idea I’m “amazed” by this. Seems rather straightforward to me.