Anybody who uses the term “National Socialist” except in explanatory cases is a transparently dishonest bad faith actor trying to associate the left with Nazis by arbitrary naming while the right associates themselves by literally defending Hitler and doing fascism.
TL;DR: guy above you is a chode.
https://xkcd.com/1958/
TL;DR: faking out a self-driving system is always going to be possible, and so is faking out humans. But doing so is basically attempted murder, which is why the existence of an exploit like this is not interesting or new. You could also cut the brake lines or rig a bomb to it.