[Tytus Gerrish]

I also noted that iron man's Chest Arc has gone back to a triangle.
In the first iron man movie i noticed lots of hydrogen tanks in the backgrounds also the bus that iron monger threw iron man into was a hydrogen powered vehicle. Tony's miniaturised arc reactor is presumably powered by hydrogen as the metal he harvested from old missiles to make his first reactor was Palladium, which has the ability to absorb up to 900 times its own volume of hydrogen at room temperatures. If in fact Tesla motors is getting a cameo we are probably going to see lots of other eco-friendly tech throughout this new film.