The Indianapolis 500 will be immortalized on a commemorative stamp that will hit the mail in time for the 100th anniversary of the historic race next May.The Indianapolis 500 is one of 25 subjects highlighted in the United States Postal Service 2011 Commemorative Stamp Program.Award-winning illustrator John Mattos created the stylized, art deco illustration of Ray Harroun driving the Marmon Wasp, winner of the inaugural Indianapolis 500 in 1911, on the Indianapolis 500 Forever Stamp.Text along the bottom of the stamp will read Indianapolis 500, with small type along the bottom of the stamp opposite the year 2011 reading 100 YEARS OF RACING.The USPS receives thousands of suggestions annually to honor various subjects on postage stamps.This is the second time the Marmon Wasp has been featured on a U.S. postage stamp. The car also was highlighted as a 17.5 cent stamp in a series on transportation in 1987."It's a great honor for the Indianapolis 500 to be featured on a United States Postal Service stamp," said Jeff Belskus, Indianapolis Motor Speedway Corporation president and chief executive officer. "The stamp recognizes the 500 as a vital part of American culture and is a wonderful addition to our celebration of the 100th anniversary of the race in 2011."The stamp will go on sale in May. The 2011 Indianapolis 500 will run on May 29.