I see it as an issue of convenience vs actual benefits. Create a system that can tell if I am drunk with near-perfect accuracy from just me being in a vehicle a

I see it as an issue of convenience vs actual benefits. Create a system that can tell if I am drunk with near-perfect accuracy from just me being in a vehicle and I am ok with it. However the current systems we have imply that I'd have to blow into something every time to start my car, that straw thing would get full of saliva, and on top of that there could be false positives so it's obviously a big no.