Ok, quick post because this is kind of funny. Check out my friends hand:
Those 2 burn marks on the right that are half oval shaped...that’s sunburn from a sticker on a rental car window that amplified the sun rays and burned my buddies hand on a 2 hour drive up in the mountains of California.
He said he was nervous driving all the winding roads and white knuckled the whole drive, and had his hands in the same spots for long enough to let the sun burn him in the same spot.
So beware rental car windshield stickers! Those things will act as a maganfine glass and burn your skin!
Or, simply move your hands around to different positions.
Cheers!