On this side of the pond, we often face the "Izzat an old MG or something?" question. In my experience, it's about a 3:1 ratio to the kit car question.
Sometimes, someone with a little bit of passing knowledge will follow up the MG or kit car question by asking if I take the car to a mechanic or an exterminator. Those comedians get a nice compliment on their Porsche (or Corvette/Mustang/Camaro), and I happily go about my business.