.As I understand it the goldcrown cars will run only tracks 1 mile and larger,Silvercrown will run dirt and 1 mile and smaller.How they are going to divide up the 1 mile pavement tracks I dont know.But my guess woud be it will depend on top speed at the end of the straightaways.One place might be Gateway in ST.louis,To fast for the silvercrown but would be ok for goldcrown.That is just one example i heard of.The Road test went excelent A.P said he was very satisfied with how the car ran.