Quoted from Zitt:Pretty sure the Transparent Aluminum comment was more directed as a joke in reference to infamous scene from "Star Trek: IV - the Voyage Home":
It's a real thing developed in the early 80's, but it's not really aluminum - rather, an aluminum compound. The best use for it now is bullet proof glass since it can be about 1/2 the thickness of standard BPG. However, it is incredibly expensive.