The new Thor vs Iron Man clip was pretty cool.
Although once again I have to wonder how Tony can survive being knocked around like that. It's not like there's a whole lot of cushioning in that suit.
I figure it's got to be a byproduct of the new element instead of the palladium and maybe coupled with the shards.
I mean, surely medical tech can remove the shards in universe, so keeping the power supply in your chest must have other benefits.