THis game only got 4 due to the luck factor.  No matter how well you play, you could just draw bad cards everytime.  That is it.  Other than that, this is a wonderful, wonderful game.  This IS the perfect game to get people into Eurogames like Settlers of Catan and Carcassonne.  Easy to explain - 5 minutes tops.  Fast to play - 1 hour.  Good strategy.  Good theme.  You even feel like you are being educated at least a little bit in the area of US geography.