No, this isn't about NASCAR. The numbers mentioned are statistics from the U.S. Census Bureau, reflecting the population of the Ann Arbor area:
74.68% White
8.83% Black or African American
0.29% Native American
11.9% Asian
0.04% Pacific Islander
1.21% from other races
3.05% from two or more races
These numbers are based on the census from the year 2000, revised according to subsequent surveys and calculations.