Indianapolis 500 fans will watch their mailboxes after the highly anticipated blue envelopes featuring Race Day tickets were mailed Tuesday, March 12 from the Indianapolis Motor Speedway Ticket Office. It’s so cool that people are coming from all around the world to watch this race. A few facts and figures about this year’s initial ticket mailing:. In the 1970s, Indianapolis 500 tickets were mailed in brown envelopes with the IMS return address in the upper left corner. In the 1980s, a heavier-stock, gray-colored envelope was introduced to mail the tickets, with just the IMS Post Office box number in the upper left corner. So, the IMS Ticket Office decided to color-code the ticket envelopes for each event.

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