I searched for it, but I didn't find anything here, and while checking out some of the archives at The Knee Slider, I found an article about plastic engines possibly being a viable alternative for automobile/motorcycle engines of current production types.
Article follows:
Plastic Engines – We Have the Technology – Is Anyone Interested?
__________________
"¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"