Our vehicles all have a single disk CD player but we seldom use it. Easier to select from all our music via ipod or usb stick or car's internal hard drive
use I tunes to import your CDs to the computer, then you have at least options.
1) load them to a ipod and play in the car via bluetooth or USB
2) load them onto a USB drive and play
And some cars have internal hard drive to store music on. (our acura is one)
We have 500+ CD albums and I can easily fit all the music in MP3 format onto a USB stick, and can fit all of them barely on an ipod with max memory.
CD player in the car is relegated to playing books on tape on long trips.