I don't know if you guys have seen this before but-
SIT | Self Inflating Tire
IMHO this can't get to market fast enough! Not only would it keep the tire pressure on the average car maintained at the proper level but it has applications in aerodynamics too.
Think about it; if you don't need to access your tires, to check pressure or repair every lttle puncture, and your tires last longer because they're always at the right presure, then you can apply fairings without compromise to those needs.