> >... it's high time to
> > return to these undeservingly forgotten, but very potential engines.
Ok, so instead of spending umpteen billion on a new and overly complex IC engine, why not just start building "universal fuel" steam-engines with flash-boilers? It doesn't need to be much more complex than a Stanley Steamer. I'm sure that minor changes with modern equipment could make them immediately usable for daily transportation needs.
Of course, it's always better to run off in a direction that makes things overly complex and infinitely more succeptable to frequent breakdowns. Better commerce that way......