We did a similar thing to our head of sixth form's car on the last day of school, except we'd made a kind of shell in advance over a friend's mum's car which was the same model, so we just had drop it over the top and leg it.
Needless to say, when I saw this on the web, I giggled somewhat.
They all pale in comparison to the hacks done at MIT.
One of my favorites involves the measuring of the Harvard Bridge using a freshman as the unit and measuring device. Said freshman went on to become head of the ANSI and ISO.