On: Howard Hughes modified a 1925 Doble steam car to r...

[jhallenworld]

That Doble engine (or its technology anyway) was used in the Besler steam powered plane. Here is a video of its flight:

https://www.youtube.com/watch?v=nw6NFmcnW-8

On Douglas Self's museum of retro-tech, of course:

http://www.douglas-self.com/MUSEUM/TRANSPORT/steamplane/stea...