Jon Favreau On Working With Robert Downey Jr. In 'Iron Man 2': 'We Have...

Jon Favreau On Working With Robert Downey Jr. In 'Iron Man 2': 'We Have Lived Through A Lot Together!'

How did director Favreau go about keeping the things people loved about the first “Iron Man,” while improving elements in the second film? Plus, did he consider doing the iron suitcase suit in the first movie? Also, why does Jon consider Robert a brother?