anyone
We used to run them years ago and also put ice in a towel around the intake manifold. But that was for class racing where you had to do everything you could think of to just go a little quicker than the next guy in your class. Even found ways to use dry ice and also wrapped the transmission in asbestos to keep the fluid thin for less friction. I wouldn't recommend those things today.
I don't think it is necessary for ET racing. You can spend your time between rounds more usefully than digging ice out of a cooler, I think.