I don't think it will sell well

Look at the Q45...nice car, much cheaper than the LS430, but the Lexus outsells it by around 6:1
I don't think people will cross shop the M45 with Caddy Deville or Lincoln Town Car. The avg buyer of those cars are like 70 white males who drooled about Lincoln and Caddys when they were teens.....they usually want american iron. Besides if I had 40K to spend on a car I probably wouldn't buy the best bang for the buck, but the car that I like. Infiniti needs to work the brand out so people will buy it because they want an Infiniti and not because is cheaper than Lexus.