I prosecuted some DUIs as a student. In my state, the Sup. Ct. will give, upon application, Legal Intern Certificates to students who have over 2/3 of their credits completed at an ABA school. With the cert. you can prosecute misdemeanors - of which DUI is an M1. Great experience, and I think I could defend them right when I pass the July Bar (although I'm not interested in that).
So, my advice is, look into that w/your State juris.