They advise folding the soiled side into the bar - because you can't be certain you've wiped off all the grit and could actually scratch the paint with what looks like a clean bar. This is why I went with a Nanoskin Claybar Mitt - it's not really clay but it works the same AND you can rinse off the dirt.
Thisis what I used. https://smile.amazon.com/gp/product/B01AA1DRNU/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
And be careful to constantly turn over the clay bar and not to drop It. If it gets contaminated you will scratch the he## out of your paint.
I guess no one is looking at the link. This is what I'm using. Not a clay bar. Dang that's a big picture!
We live in Ontario (Canada) and luckily, we don't have to deal with stickers. Our government assigns "green" license plate instead! All green plates start with the letter G (our plates are 7 characters, in a block of 4 letter, then 3 numbers). You can roughly tell how old a car is by the sequence of the plate numbering. For example, our 2018 Clarity starts with GVAY, but my husband's plug in (we decided to try the Ford Fusion Plug In, which IMHO is far less impressive than the Clarity) has a GVCR plate (2020). Green plates immediately show those around you that you are driving a electric or plug-in, and are entitled to be in HOV lanes, etc. It's a great system.