Because you won the case - it is not effecting your record - it doesn't count against your drivers license either. You could do a motion to the Orange County court for a finding of "factual innocence" and then seek to have your arrest record sealed - a big waste of time.
You won and you should enjoy it - don't worry about the record.
It is true, as the prior answer states, that you could file a petition for a finding of factual innocence. However, these motions must be denied unless there is no reasonable cause to believe you committed the offense. This is a VERY difficult test to meet. In many cases, reasonable suspicion exists even though the defendant's guilt was not proven beyond a reasonable doubt.