just go to the court hearing, go in front of the judge and respectfully tell him the whole story. "I was drunk and didn't trust myself driving home. I put the keys in the ignition to....turn the heat on, radio, etc.... sometimes just stating that what you did wasn't the smartest, but that you know now that you won't bring your car when you drink, or you'll get a taxi or a ride home next time or whatever, some judges are cool enough to drop the charges to something lower. just gotta be respectful. my buddy was actually driving and go a dui, and he went in front of the judge and just admitted to doing it, and said it was a mistake and the judge didn't take away his license, and reduced the ticket in half. either way, your gonna be spending money, Lawyer, ticket, or lesser ticket