Well from a different perspective, it’s kinda hard to come up with an idea to control or mitigate the behavior of someone that is not even in the car with you.
Personally slow drivers on fast lanes are just a complete nuisance, regardless if it’s because… left lane= fast, right lane=rest. I come from Europe and we have proved that going fast doesn’t mean going reckless.
But going back to something that we can actually do to improve our own driver experience.
a) I will say maybe a heads-up display that enables you to see selective information (there has been a few attempts made before, but nothing solid in the market), and allows you to keep the phone in your pocket or anywhere you want.
b) Will love to the Nonda apps to become part of the Apple Carplay and Android Auto program.