CCR, Computer Controlled (or Commanded) Ride: this was a method in which the valving or fluid consistency was changed with the push of a switch in the cabin. It changed the performance of the struts from a smooth luxury car ride to more of a sporty firmer ride.
The struts were used in the Bonnevilles and many Cadillacs, there was not a lot of production after the fact and therefore once they were gone, no aftermarket manufacturer made them. If you search for parts you will find strut replacements listed, when you look closer you notice the part number is the same as a standard strut replacement.
00 Regal GS: All kinds of cool stuff.