Sony has launched the NV-U81T and NV-U80 navigation units. Both of which comes loaded up with Sony's Position Plus—I'll show them a position plus...—technology for more accurate positioning and routing even when the signal is weak. The unit itself has a 4.3-inch touchscreen display with voice commands and Bluetooth for hands-free calling via a cellphone. The NV-U81T includes a 4GB hard drive for map and information storage while the NV-U80 comes with 512MB of memory. They should both be hitting the shelves this November and will likely cost an arm and a leg.