I can appreciate your interest in this subject. However, disclosing that type of information would be conterproductive to anyone who lives close to the border, as I am pretty certain this board is monitored by an alphabet soup of federal agencies.
sorry
I am not trying to be a dick or flame you, I just think posting this type information would help authorities more than anyone else.
Rectal retention. Bet they don't look there. If it was a car I would make sure it was a spot that they would not be easily able to get to. But if they are searching your car then something has already cued on you and they might take it into garage. I wouldn't particularly chance it. I here that Federal prisons are nicer than State prisons, but I don't care to visit either one.
I would just shove it my ass and run across the boarder as fast as I could, I'll tell ya what though, once I got about 800 dollars worth of gear from a well known vet down there, he put it in a plastic sack, then I set that plastic sack in the passenger seat of my car and drove across the boarder, told the nice guy in the booth to have a nice day.
Make sure you are one calm dude when you cross the border. they are trained to sopt any type of anxiety you may be displaying. Maybe chew a valium before you come back across the border, and make sure you have a solid reason for why you were down there.
I went down there years ago with this girl who had BIG ole TITTIES and she had a nice low cut shirt on showing them off. She drove the car back and the booth guy, kinda looked at her(checking out the goods), and than waived us through. In all honesty, I was wieghing in around 215 lbs. looking pretty pumped and he F***ING eyed me so hard! I will never try that again.
When you drive up to the guy who is questioning you, just shout really loud "OH MY GOD, IS THAT AN ELEPHANT!" when they look the other way, just slowly drive off... I saw it work in a cartoon once.