Steam Putt-Putt or Pop-Pop Vehicle, Boat, or Who Knows What?

The movie "Ponyo" had a little putt-putt boat in it.  I thought this design might be helpful for a low-cost boat design.  Solar powered?  Applicable for big boats, ships, snowmobiles, water jets, who knows?  Power generation, green machines, why knot?

Please see below for start materials....

• http://www.sciencetoymaker.org/boat/index.htm - make your own plus lots of links...
• http://www.sciencetoymaker.org/boat/howBoatWorksl.html - explains how it works...
• http://en.wikipedia.org/wiki/Pop_pop_boat - wiki, links, history, etc.
• http://books.google.com/books?id=R2b1ObGdR6AC&pg=PA70&dq=steam+(putt-putt+OR+pop)+boat&hl=en&sa=X&ei=V9ZUT4vxFMW0gwf2hPXyDQ&ved=0CDYQ6AEwAA#v=onepage&q=steam%20(putt-putt%20OR%20pop)%20boat&f=false - Make Magazine
• http://modelsteam.myfreeforum.org/archive/putt-putt-boats-and-engines-talk-build-tips-and-how-to__o_t__t_40752.html - Forum...networking opportunity...
• http://www.google.com/patents?id=kbdPAAAAEBAJ&pg=PA3&dq=steam+(putt-putt+OR+pop)+(boat+OR+ship+OR+car+OR+automobile+OR+vehicle+OR+airplane)&hl=en&sa=X&ei=GdhUT9DrE4rjggehrYnrDQ&ved=0CD4Q6AEwBA#v=onepage&q=steam%20(putt-putt%20OR%20pop)%20(boat%20OR%20ship%20OR%20car%20OR%20automobile%20OR%20vehicle%20OR%20airplane)&f=false - heating railway cars...idea seed?
• http://sci-toys.com/scitoys/scitoys/thermo/thermo.html - solar powered
• https://www.google.com/search?q=solar+steam+(putt-putt+OR+pop)+(boat+OR+ship+OR+car+OR+automobile+OR+vehicle+OR+airplane)&hl=en&prmd=imvns&source=lnms&tbm=isch&ei=vdhUT6HcCsP3ggeIjI3ZDQ&sa=X&oi=mode_link&ct=mode&cd=2&ved=0CAkQ_AUoAQ&biw=1280&bih=714 - images...make slide show for brainstorming meeting?
• http://solarenergy4everyone.com/make-a-steam-engine-convert-to-a-solar-steam-engine-air-hog-electricity/ - solar steam power generator
• http://answers.yahoo.com/question/index?qid=20070303164140AAgpBhl - solar boat/water purifier
• Search String - solar steam (putt-putt OR pop) (boat OR ship OR car OR automobile OR vehicle OR airplane)

Have fun.  Be the first on your block to have a solar powered steam putt-putt tin-foil hat!