If you've never seen nitro cars, it's a great experience, an assault on the senses. And Friday is a test and tune before and in between the qualifying sessions. I thought it was a limited number of cars, but they qualify 8 cars in nostalgia nitro funny car, fuel altereds, and nitro Harley. Good article on the link with more info:
http://www.ihra.com/ihra-news/nitro-...ark-august-1-2