<human>: So this actually happened today!  I live in New Hampshire and took the day off to enjoy the fall foliage with two friends.  We headed up north to the obligatory spots, but found it too crowded with flatlanders and massholes, so decided to keep going.  After several hours of driving we saw signs for Canada, and decided to go snap a picture of the border.  Now, this far up north in NH, there is absolutely nothing.  We took Rt. 3 up to the border, and ended up at the crossing on Rt. 253 (for those Google mapping along).  This is a very small road in a very small town, with very poor signage (literally a small road sign that says "Canada" with an arrow).  As we come over the hill, we come across a huge Ethan Allen factory, and the road meanders through.  Apparently, they decided to build this factory directly on the border, with a one-way road into Canada.  The border station was so small, it looked like a truck weigh-station for the factory, and before we knew it we were "bienvenue'ed" to Canada.  

Now, none of us had passports on us, and I have seen too many shows where the characters get "stuck" in Canada, so I was a bit nervous, but had just seen the border guard watch us drive past, hit the border, then bang a quick U-turn.  We pulled up to the customs checkpoint, and explained our error.  He looked at me as though he had not just seen me pass, asked for all our ID's, and had us step out of the car.  

After a full search of the vehicle, he questioned us on our residence, birthplace, why we were here (I stammered out "uhh.. leaf peepin')  and various other questions.  After quite a thorough search, he sent us on our way, but not before letting us know what idiots we were for not realizing we were leaving our own country.

Can you condense the text into three sentences or less?
<bot>: Drove to the top of New Hampshire, thought we were at an Ethan Allen factory and ended up crossing the border with no passport.  Were allowed back in the country after search, questioning, and verbal berating.