The temp decrease using n2 is a somewhat marginal issue - you can adjust compounds to control the heat buildup.
The racecar tire benefits are more about how predictably the temp rises from cold inflation, and how much less the pressure rises from cold inflation than using air.
Hard to setup a chassis if you have no idea about how the tires will behave... Thought with Hoosier's quality control and lack thereof, ya might as well run humid air.
But back to the point - it's useless for US. If anything, we WANT the tires to heat up!
