Sooooo - New Model X - and just getting the car all set up for our first journey. Looking to order the North Texas Toll Authority (NTTA) Toll Tag - In reading through the NTTA information they have "Some vehicles have metallic windshields that can interfere with the electronic signal. In those cases, a customer may request a special TollTag to affix to their vehicle’s license plate." Has the standard NTTA sticker version been an issue with Model X? Where have people placed it? I do not particularly want to place it next to the Mirror but possibly waaayyyy up at the very top of the windshield - out of our view - in the corner. (We find we are really, really loving the open view of the windshield.) Only issue with getting the plate version is that it does not work in Kansas or Oklahoma (but have not gone there in 4 years - so not a big deal). My better half will not allow me to go with no front plate as many Tesla owners in the area appear to do (and as I was cogitating).