CDs won't last forever or that much longer as they do now.
You guys need to think one more step ahead. Instead of adapter and converters, there's nothing really stopping auto makers or other manufacturers from creating devices that accept memory cards (with your music on it) the same way some accept ipods directly right now. Can you imagine a car stereo that doesn't accept cd but only a memory card?
Look at how much music a ipod shuffle can store. The technology exists. What doesn't exist is sufficient digital rights management... at least in the eyes of the industry I imagine. I imagine they would to program the DRM into the device itself.
Jaco died for our sins so that modern bass players could be free to play more and be heard.