If it’s just a button that flashes “Sorry!” then maybe. Anything beyond that will a) create distraction for the driver and / or b) just be used to say “go fuck yourself”
I wonder what it would take for something like this to spread across the globe as the standard way to say "I'm sorry" to someone in another vehicle.
Perhaps a "thank you" is the right tone - something that encourages better social interactions.
Although you can get thumbs up "thank you" from arsehole drivers too: it's not just angry drivers that are selfish. One of my favourite stories is a little old lady that prangs into my stopped vehicle - and then does a runner - bless her.