- That thing in your chest is based on unfinished technology... - No, it's finished - it's just never been particularly effective until I miniaturized it and put it in my... - No, Howard said the arc reactor was a stepping stone to something greater. He was about to kick off an energy race that was going to dwarf the arms race. He was on to something big, something so big it was going to make the arc reactor look like a triple-A battery.
Iron Man 2, Jon Favreau (2010)