[justjim]

Originally Posted by NYGUY

The law only applies when minors are in the car.

Committee Approves Bill to Ban Smoking in Cars With Minors | NBC Chicago

This is a different law you rightly point out and I can see the difference in that you are exposing an innocent child to strong secondary smoke.

The law regarding University campuses and smoking in your own car is a separate and different law that was passed in Illinois. The only harm in this instance is to yourself.