Funny enough, dropped into my local car supply shop this lunchtime, this was being mentioned. Also present wasa gentleman of the 'Tracked vehicle owner's' persuasion. He did admit to doing something with a 432 whilst reversing out of a driveway, pity it was mate's car! :-D Richard Le Brocq did sit an Abbot on top of a Merc as part of an arena show in Jersey. What was remarkable, the Merc fought back! Quite a sight an Abbot tetering on the roof of a Merc saloon.
(Anyway, don't need a tank, I've got a bus!!)