Ours didn't work through the Model X windshield so we got the one that mounts to the front license plate. Works great.
WOuld also like to hear some options. Put ours in the glovebox but not sure if it goes off when needed
Lol I was being serious. We have our plates registered though so it only would make a difference on toll roads that give free passage to Tesla's.Not sure if this was meant to be funny, but I doubt this will work. That said, this is where I keep mine, and I only pull it out when I need it. When I need it, I place it on the dashboard near the front windshield. However I don't need it every day - I only need it for specific routes once in a while.
Someone told me that it does not really matter because the cameras shoot your rear plate and cross reference it anyway to see if you are registered. Not sure if this is true or not.
I have the bar that goes on the front license plate, but I'm not installing a front license plate kit on my X. I'm going to install the bar behind the front bumper like this: