I'm afraid of asking, does that actually exist like that? I'm so used to quickly hitting the shiny centered hazard lights button in my car when e.g. the freewa

I'm afraid of asking, does that actually exist like that? I'm so used to quickly hitting the shiny centered hazard lights button in my car when e.g. the freeway situation suddenly changes, e.g. as a signal that I had too slow down a lot, so people behind me better do as well.