Roadmate 1424 - "It's very accurate"

A few tests on the road shows this GPS updates your tracking information very quickly and recalculates routes in seconds. I found myself testing it along well known routes and had it do the best route for me. Turns out my routes were about 90% the same. One surprising thing was I was driving along and all of a sudden the GPS shouted "traffic!". There wasn't much cars around but I was standing at a red light. I didn't order the traffic antenna for this GPS, so I'm wondering how that happened. You can have the GPS switch to 3D move which is cool because you get a visual terrain indication if you're going to be going up or down hills. My only beef: Where is the battery meter? Sunction-cup to the windshield I had no problems looking at the display or hearing the announcer. There's no SD card slot so programming must be done through USB. So far, I think it's been a very good investment.