6. Look for and preserve physical evidence
Important physical evidence, which your Sonoma County DUI lawyer might be able to use to help defend your DUI case, will disappear quickly. Find and save receipts from any bar, restaurant or liquor or retail store, save anything left in the vehicle or your pockets that in any way pertains to the incident including names, times and activities, save phone messages or current bills that show times of calls, save pill bottles, etc...