Honestly I just want a display in the back that has a few preset messages set to a button in the front. Stuff like "Please give me more space" or "Your headlights are too bright".
Barring that, would love a mirror that redirects headlights back to the driver's face. If I can deal with it, you can deal with it too.
I have this, you can buy a programmable LED sign off Amazon for a chunk of change ($150 for a decent sized one that's bright enough for daylight use), stick it in your rear window, and then make your own custom messages to display. My favorite is "Move over" after passing someone on the right I've been stuck behind in the left lane for the past two miles.
I thought the idea of brake lights becoming "larger" or "brighter" (like a bullseye design) depending on how hard you pressed the brake, was an ingenious idea of mine...
Nope. It's apparently been thought of plenty. Don't know why it isn't implemented though
I want one of those, too. Ironically, I think I'd be using the "it's dark; turn on your headlights" preset more often than the “your headlights are too bright” one. (I blame daytime running lights: drivers see the ground lit up in front of them and don't realize they still have to turn the headlight switch in order for their taillights to come on too.)
I kinda forgot about that feature. Now I'm wondering if my 2015 Accord does the same, but I normally have the headlights on "auto" anyway (unless it's raining or something). I know my 2002 Hyundai did though