3G Wireless Modem in Macbooks Soon?

A job listing at Apple is hinting at a possible 3G integration in future computers:

The Comms Software QA team within the Mac Hardware Group is seeking a motivated QA engineer to perform quality assurance testing for new Apple CPU Products. Duties for this position include, but are not limited to: Testing and reporting hardware, software, and device driver bugs for Communications technologies including AirPort (802.11a/b/g/n), Bluetooth v2.0, gigabit Ethernet, and/or 3G Wireless WAN in a detailed, timely manner.

Of course, the less exciting possibility is that Apple wants to test the compatibility of external 3G cards with its computers, but a built-in 3G modem isn’t so far-fetched: every other PC maker has something already.