This is probably country/region specific but my car (Tesla) illuminates the brake lights when it detects a certain level of deceleration. Also my work vehicles (Volvo V90 CrossCountry and XC60) do this. Finland/Sweden in my case. My car also flash the hazards when it detects hard braking and I’ve seen quite many euro cars do this. I agree that this should be standard.

I bought a Samsung S24 recently but sold it because of the terrible ultrasonic fingerprint reader. I guess I have too dry thumbs or something. Using lotion helped for a few hours at a time but I’d rather not use lotion all the time because of my phone. Tried a few tricks like registrering my prints twice etc. but no dice. Meanwhile the old optical reader on my old phone Moto G84 worked perfectly.

So my experience from this is that ultrasonic is not always better.