Comment Re:Why stop at an interlock? (Score 1) 420
In Minnesota we have "Whiskey Plates". You can easily tell (they start with a W, then another letter, then 4 digits and the plate itself is plain white which is different than the standard one) if somebody has had a DUI. Not everybody gets them, but they are very visible and once you know about them it's scary to see the number of them on the freeway.