I do remember hearing of a group of racers returning from somewhere to London, where a real convoy developed - one lot would open the rear doors of the Thames 15cwt and pass cans of beer tied to a scarf to the following van, who would then open the rear doors and....you get the picture I am sure! The problems came when London was reached, when nobody wanted to break the chain, so one or two would go through the lights at green, two or three more at amber, leaving the rest to decide whether to stop or not on that funny reddish colour.....
Hooligans, of course, but in those days of light traffic not quite what it would be today!
I must own up to being the driver of the Thames (6-cylinder Zodiac engine squeezed in!) round the coast road from Douglas towards Laxey, with a few buddies in the back, and shouting out that the brakes and steering had gone, shooting straight over the tram lines up a track that I knew was there, and the others didn't - there was a need for dry cleaning of trousers, and fumigation to get rid of a strange manure-ish smell!
Happy days!