And your car's dash controls are in-line with the steering wheel, your hands and your view forward? That's funny, cuz that's where most cars have their gauges and warning lights and such.
Out the window, seriously? You can't hold a watch up in front of you?
And Siri doesn't do this already? I've no idea, it's not available in my native language (yet.) If it can't do this, then it'll surely get the ability eventually, as it would be a big boon for the visually impaired, and Apple has a big focus on accessibility apparantly.
In any case, your complaint about this doesn't make much sense. If people want to distract themselves with texts, they're going to do that regardless of how those texts are delivered to them. Even fiddling with your AC or radio is a dangerous distraction while driving.