Drunk driving can be a felony. Everything depends on the outcome. Hurt someone or do it more than once,and you will be looking at a felony charge. For drug possession, depending on how much you have, and how you carry it, possession quickly becomes possession with intent to distribute. Get caught with drugs while crossing a state line or boarding a plane and you will be lucky to avoid federal charges. Then there are conspiracy options should your possession be linked to other people.