I have only 60k miles logged driving a diesel powered vehicle and have never had my tanks dipped. I have never seen it personally, but have heard they have dipped tanks occasionally down the street from our local cattle auction.
I personally don't believe anyone should an issue about being checked if you are driving on a public road that is maintained w/tax dollars.
I personally don't believe anyone should an issue about being checked if you are driving on a public road that is maintained w/tax dollars.