Lexus builds its first-ever supercar with the 2011 Lexus LFA. Known primarily for its highly refined luxury cars, Lexus isn't a car company one would mention in the same breath as Ferrari or Lamborghini. Developed at the famed Nürburgring racetrack in Germany and priced at over 300 large (the latest estimate is $350,000), the Lexus LFA will be constructed chiefly of carbon fiber and weigh a