Just a month ago, Garmin came clean with the nüvi 1390T as part of its 1300 lineup, and today we're being formally introduced to the numerical successor. The nüvi 1490T sports a chassis that's some 25 percent slimmer than most nüvi models and an expansive 5-inch touchscreen. As with other new Garmins, this one also arrives with free lifetime traffic alerts and lane assist with junction view. Other expected amenities are also included, namely multiple-point