Weathering steel, we used it for bridges all the time a few years ago, although it seems to have fallen out of favour recently. Asset owners liked it because you don't have to repaint it every few years (good for both reducing disruption and avoids having people work at height).
The patina can look quite nice (in my subjective opinion) but it's not particularly resistant to impact, and requires a thicker section size than painted steel.
Automotive application could certainly be... Interesting.
It was Mentor Pilot video on Boeing, he mentioned they had some fancy automated QA system they pissed a load of money up the wall on, and in the end they still had to spend just as much on rework and it was scrapped.
I've no idea if they hired new QA people after, but even if they did it wouldn't be the same people back, what with their "brilliant" idea of shedding expensive, experienced staff in Washington and replacing them with cheaper inexperienced hires in South Carolina
Even if no one dies, anyone financially harmed by their actions, be it the daycare or families of potentially exposed children should be able to sue this moron for their losses. Freedom of choice isn't freedom from consequence
I'm kinda hoping there's a GCU already in orbit. If there is, and you see this, ship, I'm ready to be uplifted now.