|The Scorpion prototype (Textron AirLand)|
Q: How long did it take to develop the Scorpion?
[Bill Anderson, President of Textron AirLand]: Starting from a clean sheet design on 9 January 2011 to the first flight took 23 months. I literally started with an empty building, nine people and a white board. On the commercial side, time is money. If it had taken ten years to build, then it would have cost you $40m. It took us less than two years and you can buy it for $20m. The airplane uses high but mature technology.
source: "Q&A with the Scorpion King"
He didn't even mention how much taxpayer money would have been milked from software development and production preparation AFTER the prototype was assembled.