When the Lexus was first produced a team of Toyota engineers roamed the World recording the sounds of car door shutting, they visited UK, USA, Europe, went into all the car showrooms and recorded them, people perceive if you shut a car door and it sounds like a train door solid then the car is good, sounds similar to what we try to do with AKBs, next time you see a Lexus try closing the doors and listen, I think they got it right, sounds just like a C3 if you listen closley, or I have I got C3s ringing in the brain, whats left of it...
