Prince Caspian opened slightly below industry expectations this passing weekend, as it coined a solid $56 million - decent, but well below the $65 million opening of the first instalment. Flick has a few days to bag more coin, before the mighty Indiana Jones unfolds, and steals away some of its family audience. Iron Man continued to pull in the masses as it stayed in second spot with an estimated $31.2 million, taking its total to a humongous $222 million and counting. The Marvel blockbuster has a good shot of breaking the much coveted $300 million mark, and is also making serious waves overseas. Elsewhere What Happens In Vegas dropped to third with an impressive $13.8 million, while Speed Racer is a nonstarter and a serious flop for Warner Brothers; flick has coined just under $30 million in two weeks.