what I never knew until recently was that the inventor of the cardan shaft lived over 500 years ago - Girolamo Cardano.
Blimey RD, who'd have known (except your mate George and you, obviously)!?
I just assumed he was some Brit from the industrial revolution sort of period - not an Italian Renaissance mathematician, doctor etc etc with a very dodgy family, a bad gambling habit and a jail record for casting the horoscope of Jesus (!!). Quite a guy - and thanks to you for another fascinating better-than-pub-quiz factoid to try to remember (but probably forget).
('s funny how GB's chassis could lead to the intrigues of 16th Century Italy . . . it's one of the constant surprises on here, how one thing leads to another because people know all sorts of unlikely interesting things - but stays, kind of, on topic!)