I'm sure the powerbook will have one eventually. However, you'd need an external battery pack to keep that thing running for more than an hour with 2 800 mhz G4's. I seriously doubt that a 1.6 ghz mobile P4 has a large speed advantage over a 667. They speed step the thing way down, and it's a cut down version of the P4 anyway. You only get full speed by having it plugged in. This completely defeats the purpose of having a laptop, which as we all know is burning cds on airplanes. Anyhow, my point is the Powerbook is one of the few high-powered mobile laptops, in that it is still light and has good battery life. Apple is not going to undermine this by adding a superdrive that makes it thicker, heavier, or cuts battery life.