This is really, really satisfying. It's from some 1978 Dutch TV show, and it appears they're having a distance contest for 2-wheel driving. There's lots of competitors, Fiats, DAFs, what I think is an Opel, but the little 3-wheel Messerschmitt really shines.
Just watch it. I really love how the 'Schmitt starts by weaving around the helper ramp entirely, as it shows it doesn't need some candy-ass crutch to get all sideways.