I absolutely do not drive through any water that isn't a trivial puddle. I don't care if I see other cars going through it, I don't follow people into minefields just because they got through. Further, the absolute nightmare stories about years after getting car electronics wet means even if your footwell stays dry your car's internals do not. My time is worth money and that means not fucking with my car's reliability.
I believe that although nebulous appeals to safety have their place in physical and cyber, so many risks are perfectly individually rational to avoid and can be explained that way. I am absolutely not going through trying to get wire harness corrosion fixed in a modern car even if I had infinite money.
There was a story recently about how a major manufacturer rushed the development of a car, and later models had like 10 miles less electrical cable in them because they had time to optimize those routes in all the harnesses. The electrical is IMMENSE. You're driving basically a huge CPU and I don't put my god damn PC in muddy water.

@SwiftOnSecurity I can't give away details, but in discussions with one of the large European auto manufacturers about their technology, they mentioned that their current cars have over 50 unique ARM processors of various specs and capabilities in them, and that number was expected to exceed 100 shortly. (This was pre pandemic chip shortage.)

Your car isn't a CPU. It's a distributed compute cluster.

@javajoint 😂