Another reason for an elevated offense is the number almost daily you have committed this infraction during time. But the most difficult and worse scenario happens you are arrested for DUI and there is a minor within the car. Of course this is a offense, your case can fall under felony.
At its heart, driving while intoxicated is not being able to perform normal functions regularly. In that regard, why does the cop choose to perhaps you might have perform abnormal exercises to test normal uses? Ever see someone walking across the street heal foot with arms down through the side?