I have had a few vehicles with 35% on the windshields. Fortunately, I never got pulled over for it. It is illegal here in Georgia. However, I have been tinting windows as a side job for about 20 years now so it wasn't a big deal for me to tint one or remove it. I have also done quite a few windshields on different vehicles for customers. And I was quick to let them know that it is illegal and they were likely to get pulled over for it. But the ones that wanted it already knew it was illegal anyway.
Hell it's their money not mine.....LOL