Not surprising to me at all.
I've been in BMW 750iL, Mercedes S500, Lexus LS460 and LX570 (own), Range Rover, Acura RL. None of them sound even 50% of my home system, especially when going 65 MPH. Forget about DREAMING approaching 100%. Maybe hallucinating approaching 100%.
No face palm either because I absolutely love my Lexus and my home HT system and life is good.