if i'm not mistaken, surely if the only evidence they have against these people is a breath test and not a blood test, all they need to do is prove that the breath test gives false positives and they get off, right?
ok, defense lawyer takes out an approved breath test machine in the court room, does a breath test which gives a result of 0 showing no alcohol at all. now defense lawyer breathes in puts a drop of vodka on their tongue and blows in to machine again. machine claims they are drunk - case dismissed.
not sure if they would be allowed to do this in the court room in front of the judge (not sure if there are rules about alcohol consumption in court), so it might need to be done elsewhere and filmed then the video submitted as evidence, but doing it in the court room would make the point in the most effective way.