2012 Indy 500: All You Can Hear Is The Cheering  INDIANAPOLIS -
MAY 25: Fans watch pole sitter Ryan Briscoe's #2 IZOD Team
Penske Chevy Dallara DW12 roll through Gasoline Alley after
practice for the the 96th Indianapolis 500 Mile Race at the
Indianapolis Motor Speedway on May 25, 2012 in Indianapolis,
Indiana. (Photo by Jonathan Ferrey/Getty Images)  Sure, you have
to deal with the travel, the heat, the humidity and the crowds,
but once you've experienced the Indy 500 in person, you realize
why it's called the Greatest Spectacle in Racing.  You walk off
the jetway at the Indianapolis airport in May and the first
thing you think of is humidity.  It may be raining -- in fact,
it's likely to be at least misting or sprinkling. It may be
warm, it may be cool. But always, always it is muggy.  As your
plane descended over the city you could see the moisture in the
air in the form of an ever-present haze. But most times the haze
is not thick enough to obscure the giant rounded rectangle with
the thin gray border tha