I am glad you raised the issue because you make a very valid argument. In fact I think you hit upon one of the major differences between circle track racing and drag racing. In NASCAR, for example, fans prefer variety of tracks and decry the so-called "cookie cutter" tracks that are near carbon copies of other tracks. In NASCAR a championship racer has to be good on everything from short tracks to intermediate tracks to super speedways to road courses. Variety is the name of the game. Likewise, in sprint car racing no two dirt tracks are exactly the same. Even at the same track the condition of the track itself can change from one day to the next - and sometimes even in the same night. The ability to adapt to various tracks and track conditions are a major part of what dirt racing is all about. Drag racing of course also requires adaptation to changing track conditions. But unlike NASCAR or sprint car racing, the track has always been the same length. In that sense drag racing is more like football where the field is always the same size even if the conditions on the field may vary depending on weather, type of turf, etc. Sprint car racing is more akin to baseball where the dimensions of the field very from stadium to stadium. The problem is that drag racing has been 1/4 mile since the very beginning of the sport. One cannot simply alter the length of a race without also effecting all the stats and data that has accumulated over the entire history of the sport. Because of that what we will be seeing starting with Denver will be fundamentally different than what we have seen in drag racing for more than 50 years.