What if you stepped on someones discarded joint and tracked it into the car? I assume they can stick to the bottom of a shoe just like a cigarette or any other trash.
Yea, that guy needs to learn he can't be certain of anything. Someone could have planted drugs in/on his car and then got the police to pull him over by calling 911 saying he just witnessed a drug deal. If you have kids, especially teens, you never know what they might have hidden in there. Many parents are oblivious to the fact that their kids do drugs for example. If you have a used car you can't be 100% at all unless you strip the car apart. Goes back to what I said earlier, cops know the hiding places the previous owner might have forgot stuff at. You likely don't. Or maybe you had a prescription a while back for pain and a pill feel out you didn't know about. Since you probably no longer have the subscription bottle you just got a charge for having a narcotic or controlled substance. Or maybe a law changed recently you didn't know about and your switch blade is no longer legal, or that magazine holds too many bullets, or your knife blade is too long, or that spice you bought when it was legal is no longer legal. Yes, many crazy examples but people who thought they were 100% in the clear end up in jail everyday because they submitted to a search and got busted for one of those reasons or something like it.
This is not about being paranoid though. Why do you feel you must prove to the officer you are innocent. We are suppose to be innocent until proven guilty in America. Why help an officer possibly prove you are guilty of something? Even if you think you are 100% in the clear, why? Will you not sleep at night unless you think the officer believes the same as you do that you are a good citizen? Do you like strangers going through your stuff? You like your privacy being invaded for no reason? And most importantly (at least to me): Why take the chance?