Does anyone know if smarts have a "winterized" version for colder climates? I.e. if someone were stupid enough to buy a smart car to Alaska or Siberia, do they come with "extras" (like a second battery, fuel pre-heaters, etc?) If not... how hard would it be to fit these? I.e. if I were to buy a 2nd hand, LHD smart, what would you recomend fitting to it before shipping it over to Alaska and attempting the Dalton highway? M.