Sports car event at Air Park was the biggest in history
![Sports car event at Air Park was the biggest in history](http://bloximages.chicago2.vip.townnews.com/journalstar.com/content/tncms/assets/v3/editorial/6/56/656a2238-0438-59d3-8e8d-eb6de5232ac8/5407ada2b229e.image.jpg?resize=300%2C125)
The Sports Car Club of America calls its Tire Rack SCCA Solo Nationals, the timed-racing event that occupied Lincoln Air Park's flat racing space earlier this month, the largest motor sports e…