And, how will this prevent someone else from starting the car, and then switching drivers once the car is running.
So, once again, the habitual Drunk drivers will easily find a way around this, and the only people left holding the bag and having to deal with this stupid thing are the honest drivers who don't drink and drive anyway.
But that is what we always do in this country. Instead of actually properly enforcing the laws we currently have, we make more and more redundant laws, that end up penalizing those who follow the laws anyway.