Source: Michigan Mike
To date, there have been two races at Devos Place and and both have been disasters. The first, in 2005, had inadequate ventilation and fans complained about the fume build-up. And the entire event that year was overshadowed by the death of a security guard that was working the event when one of the huge roll-up overhead doors at Devos Place crashed down on him.
The second event in 2006 didn't fair much better when the producer of the event evidently didn't have the funds to cover expenses and issued bad checks to most of the class winners & runners-up, the American Speed Association, suppliers, and Devos Place itself. Many racers and ASA lost thousands of dollars by participating. Investigations & lawsuits are pending. It might be an interesting way to bring racing to Michigan in the winter, but so far, racing at Devos has been cursed. I'd be surprised if anybody tries again.