We haven't heard much from SPOT since its Messenger was initially launched in August of 2007, but the personal tracker is finally seeing an update courtesy of some swank new functionality. Announced here at CES, SPOT Assist is meant to provide GPS-based roadside assistance, a first for a portable device such as this. Users who purchase the upgrade will be able to slam the above pictured Help button in order to receive roadside (or jungle-side, as the case may be) service around the clock in the continental United States (and Canada later this Spring). SPOT even notes that OnStar relies on positioning data received through cellular networks, though a bona fid
