Infiniti is Nissan's luxury car marque, much like Lexus is to Toyota or Acura is to Honda. Like Lexus and Acura, Infiniti was created primarily for the United States market. The brand debuted in 1989 and has built up a fine portfolio of cars and SUVs ever since. This 2009 Infiniti G37 Convertible is one of their sports cars from the fourth generation of their G-series line-up. With only 20,500 reportedly original miles on the clock and bearing many commonalities with the Nissan 370Z sports car, it's an excellent weekend tourer or even daily driver if you desire.