What a thread. I'm so glad we could have a thread about using and abusing cannabis in the middle of the motors forum when the op was about having a marker on his car.
We've got great attitudes from "its alright" to "no wonder everyone hates us". Paranoid much or is that the proof the cannabis makes you paranoid I wonder. Dear god, is it any wonder this country is in the mess its in?
The fact of the matter is that the op allowed someone to commit a crime in his car and did nothing about it. He got caught. Its his fault and wherever he goes in his car he will likely be stopped. He got away very lightly considering what could have happened, so will people please remove that stinking great chip off their shoulder.
What if the op had become impaired enough he ploughed into a group of people. Would you be so quick to berate the police? I don't care what scientific evidence you think you have based on your own opinion, saying a car has sufficient ventilation etc, I go on facts, not opinion.