I was gona suggest this on the "Heat" thread! Heck of an idea! (I actly think all racing should start later..."back in the day" I think everything used to start at like 8pm cuz that was after people milked their cows - I heard - it worked back then...). Amazing in northern IL last few days, around the 730/8pm hour, it is a measurable difference on being comfortable outside (compared to the little heat wave we are having). I agree that everyone should look out for the track workers/pit crews; as much as anything ("easier" to get people to help if they don't have to be there in the middle of the afternoon - no matter what the weather is)