DoesAnyoneCareIf

I'm OP, and not Canadian... nearish Denver, CO To be fair, it is a little suspicious and I understand that, but they seemed to already have their mind made up when they came to my window that I was up to something, even after I explained the situation. I have an hour+ commute between home and work and after an awful day at work and in general I needed a few minutes to chill out before making that drive. The lot was empty and out of anyone's way so I parked and was there maybe five minutes before the police pulled up. And to the questions - I did not consent to a search, one of the officers that arrived had a dog and when he took it around the outside of the car it hinted on the passenger side - nothing was in the car but I had a friend in the car the night before that has a medical marijuana card so the dog probably caught that scent. Something that I also explained to the officers. But that was enough to give them probable cause and so they searched my car, finding nothing. That all took probably twenty minutes and then they continued to question me for another twenty or so about if I was going to hurt myself and related things. It was pretty ridiculous, but at least they let me go.