I get a lot of feedback about the cars I critique with a common complaint aimed at their overwrought complexities. It seems as though some of you simply want a raw, elemental machine that's only about 2 things: car and driver. Well that's exactly the point of the Alfa Romeo 4C...now available in a vitamin D formula. It’s been a year or so since I tested the new 4C Coupe…the little mid-engined 2-seater that ushered Alfa’s return to the U.S. market. So singularly purposed, I claimed it to be one of the most enjoyable cars I’ve ever driven. And now I’m with the convertible or Spider, if you will. For an extra $10,000 you can get a little closer to nature and the exhilarating sounds from the sport tuned dual exhaust.