Former late night show host David Letterman discusses his passion for the sport; Christian Lundgaard has a bit of a sophomore slump; Meyer Shank Racing is led by two of the best veteran drivers in the sport -- Helio Castveonues and Simon Pagenaud.

An inside look at what Indianapolis is like during the month of May, a time when the buses start pulling in, the diehard, lifelong fans hit the streets, and the month-long party begins.