Transparent Aluminum As featured in star trek IV!!
Do you guys remember the scene in Star Trek IV where scotty exchange the formula for transparent aluminum for a free ride? Well, this isnt Sci-Fi tech anymore, transparent aluminum now exist!!
"Engineers here are testing a new kind of transparent armor -- stronger and lighter than traditional materials -- that could stop armor-piercing weapons from penetrating vehicle windows.The Air Force Research Laboratory's materials and manufacturing directorate is testing aluminum oxynitride -- ALONtm -- as a replacement for the traditional multi-layered glass transparencies now used in existing ground and air armored vehicles."
More info over here: http://www.af.mil/news/story.asp?id=123012131 (right click, open in new window)