If I remember rightly, my father [who was a founder member of the Veteran Car Club of Australia in about 1954] made it quite clear to me that the international definition of a 'Vintage' car was a car manufactured between the 1st of January 1919 & the 31st of December 1930 [inclusive] If it is newer than that, then it does not rightly qualify as Vintage, no matter how much the masses at large bastardise the use of the word through lack of knowledge.

I'm sure that there is a proper term used to describe cars that have attained 30 years of age, but Vintage surely isn't it.