A friend saw a woman he knew had a Breathalyzer in her car drive up to a store, obviously drunk. He went over and asked her how she started the car. She bribed the little boy next door to blow in the thing.
If there was one in every car how long before somebody started selling a device to blow into the tube?
In MN, I guess it takes a photo of you as you breathe into it...no joke!
Just have some of these handy.