For some Illinois drivers, it seems that saying goodbye is the hardest thing to do…when it comes to their current plastic I-Pass transponders. I don’t know how you feel about your little plastic I-Pass transponder, but I definitely have mixed feelings. One the one hand, it is a lot easier than stopping to pay cash at a tollbooth (remember when we used to be able to do that?), but on the other hand they are a real pain to keep track of, especially if you share one with your family.