Robert Downey Jr. is going from saving the world as Iron Man on the big screen to saving the environment in his new Max series Downeys Dream Cars. Extras Melvin Robert chatted with Robert and wife Susan about the show at its L.A. premiere. Robert also reacted to Tom Cruise saying he wanted to do a Tropic Thunder sequel and the possibility of an Iron Man 4. Downey's Dream Cars streams June 22 on Max.