Yous a balla'.
The NSA/Five Eyes listens to your brainwaves through those... I read.
The MkIV had a CD and no cassette deck, which was maddening. The M3 (Mazda 3) has an aux and USB jack and it's like entering the year 2009. Now I can listen to podcasts about cars while I'm stuck on the Gardiner Expressway - our major downtown artery - which is undergoing 3 years of lane closures! Huzzah!