A longstanding legend at the Indianapolis Motor Speedway involves bunny rabbits. From 1911 to 1993, there was traditionally only one race held annually at the Speedway. Activity outside the month of May was limited to semioccasional tire testing. Thus for eleven months out of the year, the grounds were noticeably quiet, green and lush, particularly after nine holes of a golf course were built in the spacious infield in 1929. The well-manicured grounds naturally became a home for fauna, particularly rabbits and other small vermin. As the race participants would arrive in the spring, they would often be greeted by numerous rabbits roaming the grounds, oftentimes running out on the track. The rabbits were thought to be welcome and some considered them symbols of good luck. However, they were sometimes a nuisance, causing yellows for running out on the track and evading capture. Al Unser, Sr. famously ran over a rabbit during the 1988 race. The well-known presence of rabbits at the Speedway even began a tradition that a rabbit would appear somewhere in the race program each year.