The use of standard blue screen techniques for doing matte shots of the birds proved to be unacceptable. The rapid movement of the birds, especially their wings, caused excessive blue fringing in the shots. It was determined that the sodium vapor process could be used to do the composites.
As far as MLB goes, each team plays 162 games in a season ... 81 home games and 81 games on the road.
There are 30 major-league teams and there are 30 days in a month. Baseball is our national pastime. Driving is our other national pastime. According to my friend Ben Blatt, the logic was simple: Completing a 30-day journey that would take us to all 30 ballparks, entirely by car, was basically our duty as young Americans.