The Act protects against distributing digital audio recording devices whose primary purpose is to rip copyrighted material.
So, the primary purpose of the CD system is ripping CDs is it? Not, for instance, listening to the radio, playing CDs, or even listening to the music I have previously ripped from CDs using the system AARC is complaining about? According to their argument that would have to be the case, even to the extent of ripping a CD and then only playing it back once, to meet the "primary purpose" claim. Or is the AARC expecting to convince a jury that owners of vehicles with these devices are ripping CDs onto a hard drive in a device that they will then probably need to dismantle in order to remove and attach the drive to some other system in order to play back the ripped music somewhere other than in the car?
AARC's greedy lawyers are greedy. Music (ripped in-car, naturally) at eleven!