You must not have been to any high school parking lot recently. The lots where the students park typically have nicer cars in them than the teachers' lot.
Many parents, black, white and other races, want their children to have a better life than they did. As a result, many kids are getting cars when they turn 16. By the time they get to college, at 18, they are ready for another car which is usually newer with more features. In many instances for kids going off to college, their car is equal to or better than that of their parents because moms want their babies to have the most reliable car they can afford.
Today it is so very common for 18 year olds to have those kinds of cars. Don't believe me, check out UA's campus on move-in day.