I placed the order at RPMTesla. I’m considering just the single sticker too…though I might put one on the front for any automated readers. This is my 3rd car with HOV lane stickers. The first, a 2005 Prius, came with the stickers already attached (and badly!), the second was my eGolf and for that I used PPF underneath the stickers but applied them all…still weighing my options here but I also haven’t heard of anyone getting a citation due to lack of visible stickers (the rules are barely enforced for real offenses as far as I can tell)