I was driving with some friends, and they had smoked pot in my car while I was using the bathroom at a gas station. I got back in the car, and smelled it, and told them to get rid of it, because Im on probation. I get pulled over later, and the cop smells the pot. He asks all of us to get out of the car, and finds a bag of pot under my passenger seat, and a bong in a napsack in my trunk, which my friend had put in there, since he was spending the night over anothers house. One of my friends confesses it was all his, and the cops still arrested us all. The cop also didnt read us our miranda rights, but didnt question us. I was wondering what the extent of the knowledge has to be in order to still be considered in possession.