A patent granted to Apple provides new hints that a 3G version of the MacBook may be in the cards. The new patent outlines a detachable, magnetic antenna for connecting your laptop to the Internet on the go.
Patently Apple first reported on the patent, one of a series of patents newly granted to Apple. The antenna appears to sit on a hinge when connected, so that it can be adjusted to ensure the best reception. The antenna is also attached by magnets, so it comes off easily when knocked, stepped on, or otherwise duffed up. That should keep it from breaking.source