Having had my car completely unloaded in a neighboring state and my family standing on the side of the road for 1.5 hours while we waited in freezing temps for a drug dog to arrive after a recent ski trip from Colorado -— where they found nothing and gave us a warning for no front license plate -— I see a problem with both drug laws and differing states having differing laws.
They left all our stuff on the side of the road — had to load it back with cars whizzing by at 75mph -— and left with not even an apology for wasting our time.
Your problem was driving with no front license plate, which is against the law in almost every state.
Cops love burnt out lights, missing plates, etc. I got stopped and hassled in New Mexico for a cracked winshield (yep, that’s illegal there). Cops have to have probable cause to stop you, which then opens the floodgates to search the car, etc.
So, keep your car legal and you won’t get stopped unless you do something else illegal that can be observed.