Will be a little complicated... but as an optional, add flags of provinces or states where they are manufactured vehicles (located next to the flag of the country) would be an interesting idea if you could, right? but as I said, it would be confusing. What you think of the idea?

And... in this link, flags of the argentine provinces:

http://en.wikipedia.org/wiki/Provinces_of_Argentina

The factory locations:

Buenos Aires province: Ford, VW, Mercedes-Benz, Toyota, PSA (Peugeot & Citroën), Agrale, TATSA, Zanella.
Córdoba: Fiat, Renault, IVECO, Zanello, Pauny, Materfer, IME (until 1980).
Santa Fe: Chevrolet, Suzuki (GM).
Tucumán: Scania.