The annual auto race known as the Indianapolis 500 takes place on Sunday during Memorial Day weekend. The race is 500 miles long, and it’s in Indianapolis, which means it was named properly, because the best names confer important information. Otherwise, there’s a lot about the famed race you don’t know. John Green is here to fill you in on the less-important but still interesting information about the race in this week’s episode of the mental_floss List Show.