It'll never fly you know!

[#1]

And neither will this one!! 

[#2]

I followed an old bus yesterday that was smoking like that second engine.
Watching the first video I was thinking 'I hope they have it well staked down '
This one is absolutely beautiful

But from an engineering point of view this is heaven
-J3igE&feature=fvwrel

[#3]

The last one is absolutely superb - I was an engineer before retirement (I suppose I still am really  )

[#4]

I thought you would appreciate that one Jim

[#5]

That second one might not fly but it blows great smoke rings, AND, I am assured by my teenage grand daughter, that at tick over it has a fabulous techno rhythm