No photo's, and not a Mini, but after a rather enjoyable mess 'do', the hooligan student pilots of the University of Wales Air Squadron managed to get thirteen of their number in the adjutant's original Fiat 500! This just happened to have a full length fabric sunroof, so 11 were actually standing up! I was one of the two sitting down - on my mate's lap (no, we weren't that close friends..!!), with me steering & changing gear, him working the pedals, we got the thing up to an indicated 40 mph down St. Athan's main runway!!
Oh, the impetuousness - and stupidity - of youth!!
Keith