PHOTO: Rapper DMX Passes Out In CopCar After Boozy DUI Arrest

DMX was either wasted, exhausted, or both following his DUI arrest Friday morning ... because he passed the hell out once he got inside the squad car -- and TMZ has obtained dash cam footage of the entire bust.
TMZ broke the story ... the rapper was popped in South Carolina around 3AM Friday after police determined he had been driving under the influence.