People v. Timothy H. Freeway accident where defendant’s vehicle flipped upside down. Five passengers in vehicle. All pulled out by a good Samaritan. Police arrive on scene. Defendant admitted to driving and drinking. Arrested for DUI. DMV hearing resulted in license suspension. Trial verdict in court resulted in a not guilty verdict. DMV decision appealed. License suspension reversed and driving privilege restored.
People vs. Jasmine P. Defendant arrested for DUI and chose a breath test. DMV hearing testimony from the arresting officer revealed Title 17 administrative procedures were not followed. Breath test results ruled inadmissible. No suspension.

California PC 1203.4
If you’ve been convicted of a crime in the past but have completed the required sentencing or probationary requirements, you could qualify for an expungement