You mean like this?

(Fast forward to 2:25)
[ame="http://www.youtube.com/watch?v=uSjdBBhm3Vg"]YouTube - Condorman Proknovijac schwarze Porsche[/ame]
It's funny that you'd bring that up, though...
On the way to Carlisle this year, I got stuck next to a truck for about a mile. I was trying to pass him, but he was going along at a pretty good clip AND there was somebody in my way in the passing lane, so I got stuck there for a while, right by his trailer, hoping that he remembered that I was over there.
But as I sat there, I began to notice that this particular trailer didn't have many hoses, chains, marker lights, or storage bins under it.
I would NEVER try doing so in a million years, but I am 99.9% certain I could have just gently faded under his trailer and out the other side very un-dramatically.
I am disturbed at how close I got to thinking about just how easy that would be. *laugh*
Let's put this one in the "Don't try this at home" categogy, though.
There is a clip of a Sterling driving under a barricade at 1:45 into this video:
[ame="http://www.youtube.com/watch?v=TOsTzaxP9Uc"]YouTube - Vintage Sterling kit car footage -- The Chase[/ame]
And of course, there's the one of me driving under the wing of the Beechcraft Bonanza that's at our field.
[ame="http://www.youtube.com/watch?v=ZNhjk_QLC3k"]YouTube - Sterling kit car parked under the wing of low-wing airplane![/ame]