Arguably one of the coolest technical marvels in the fictional universe (no pun intended), Tony Stark’s suit is actually a hybrid of several advanced systems:  Propulsion, communication, weapons, and protection.  While making the whole may be extremely difficult, it turns out that we have created several of the individual pieces.  We talk about the R&D cost of making the suit, the importance of an air foil, and Ben quotes Snoop Doggy Dogg.