Racing in 100+ heat, any advice?

There use to be a guy at Texas raceway whom use to make a ac unit for your car but you would have to fill it with ice every round
Thanks, I don't have a problem cooling the car down enough, it's the wife and I that are dying out there :-)
I've seen those A/C units that you can make with a 5 gallon bucket, that might be something to consider. blow its output behind the box fan that is blowing on us.......