I think my favourite happened to me a couple of years ago at a local show. I was stood by my jeep talking to a mate (also jeep owner) when a bloke walks up and says "My mate has got one of these in a shed, been there years". As we all know the old ears prick up at a sentence like this. He then continued,"Yeh same as this but a bit bigger and more rounded at the front, I think it has a Rolls engine in it". Me and mate reply almost in unison "Ah that sounds like a Champ, made by Austin and from the post war era, this is WW2 American". To this the bloke replies completely deadpan, "No it's definitely one of these" :???