Whites normally have a lawyer lined up for this kinda stuff.If you ever do make a "mistake", make sure you have a lawyer on speed-dial. It doesn't matter how late/early it is - most DWI attorneys are used to being rudely awakened at 2:00 AM. Cooperate and follow instructions the police give you if they ask you to get out of your car. If they ask to search your car, you can say no. Do not make any statements or submit to any "tests" until your lawyer arrives at the scene or advises you. If you get stopped and don't have a lawyer, ask for one.
One more thing, don't act sane if your white, as you may need to use the white mentally insane card down the road.