Sure, I can see that. But I also notice you said that you could charge the passenger which means, I guess you could charge me as well? Am I right?Not entirely true. Let's say I search your car (you have care, custody, and control of it) and you have a passenger sitting in the right front seat. While searching your car I find illegal drugs underneath the right front seat. Unless you own up and state that they are your drugs, I could charge the passenger with them depending on the totality of the circumstances.
Supposing I don't have a passenger, am I not still responsible for aunt Myrtle's hydrocodone? Or, better yet...I bought a used car, that at one time had some dopers in it. You pull me over and I'm all by myself, the burden of proof for anything illegal in that car whether it is mine or not shifts to me, does it not?