Maybe you shouldnt mention the war to old couples.
Whilst showing my Plus 8 at the Edenbridge Motor Show on Sunday an old boy came up to me and asked "what engine is in it?", I told him it was a Rover V8 to which he replied "Good, at least it's not German, those b*st*rds tried to kill me during the war" and then he walked off, leaving me somewhat stunned!