I know this wont happen, but really, why not? In fact, why not offer a 3G or dare i say 4G option on all mac laptops? Just thought of two reasons actually: 1. Decreased demand for iPad which probably has a much larger margin, especially once people visit the app store. 2. Battery life. With 3G enabled, it would be pretty bad. Obviously that's a sacrifice many people would be wiling to make, but apple might not feel that that's the user experience that they would want from a laptop like the air.