You obviously don’t know shit about dirt racing. And I love Stewarts track too. He owns Eldorado and was pissed that NASCAR didn’t pick his track for a dirt race. I get that. However, his track rubbers up the same as did Bristol. You were not seeing asphalt or concrete, the black surface is due to the compacted clay surface taking rubber from the tires. This is a common developement in dirt racing.
Pic from Eldorado
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I thought the race was great and more excitIing than most NASCAR races. I like the change of venues and track surface. I can’t wait to see the road coarse race in Austin.