I suppose this may be old news here, but a quick search I could not find it. So…
Reminds me of ‘Back to the Future’…
The ultimate in scratch building.
1’ to 1’ scale.
David, nice interview, thanks for posting the link…
I don’t think I’ve ever seen a backhead so nice and clean 
David Hill said:That's because there are four or five pages of it on another well-known forum.
I suppose this may be old news here, but a quick search I could not find it. So....
I’m not going to repeat my forty-something posts on ‘Tornado’ here.
Have look on Youtube for the dozens of movies…well-worth the time and trouble, IMO.
tac