It's always bugged me that the "Good-to-Go!" passes needed to cross the Narrows Bridge were so big, when it's just a tiny chip inside that obnoxious, ugly sticker.
I just peeled the transponder off the windshield of the Jeep we're about to sell (anybody want a jeep? Anybody?), and found out why:
The majority of it is taken up by a thin copper sheet that must be the antenna.
