My son used it to black out the badge on the front of his truck and the wheels.
It has held up well on both IMO.
He had the tires changed and that did take some of it off the rims, but not as much as I would have expected. He's since changed out the grille, but the badge showed no signs of wear from washing/bugs etc last time I saw it.
I wouldn't hesitate to use it on something I wanted to see black, but didn't want to paint permanently, on the front of a car/truck.