If anyone thinks that such a warning automatically absolves Tesla of responsbility for ensuring this sort of stuff doesn't happen then they're grossly mistaken. My big rant 2 weeks ago [1] covered exactly this. Real-world design means that you don't just slap a disclaimer or warning sticker on and expect that to be enough. You must, as the designer, anticipate misuse of your design that is encouraged by proper use of it and work to eliminate that capacity of misuse.

In the same way that modern web server systems try to sanitise database inputs, etc. rather than just blame the developer for not knowing best-practices themselves, real-world engineering is all about understanding how the system may be misused and designing to eliminate the capacity for misuse.

Yes, you'll never eliminate misuse completely, but the court of law is littered with examples that didn't bother to try and so couldn't defend against a claim of negligence in their design engineering process.

Simply saying in a manual that 'hey, this may cause you to crash in these circumstances - pay attention!' isn't enough.

[1]: https://news.ycombinator.com/item?id=11680576