Weirdest Loco You've Seen

This was actually what I would show as the weirdest I have seen but must give it some more thought. Did we talk about this oddity not too long ago? I am curious as the Listing says its a Diesel but Wiki article says combustion.

Does that HO model actually run?

Always thought this was odd but for the time very inventive

There is something like this in the Thomas PlaRail line isn't there?  Or maybe its the metal Thomas and Friends, but I know I've seen one.

The real one was a German experimental one I believe, I think it may have been Fleischmann who used to make an HO version of it, although don't quote me on that.  From what I recall it was actually powered by an aircraft piston engine and did actually enter service for a short period at least.

Definitely another oddity...