Motorola, Inc. today expands its accessories portfolio with two new portable Global Positioning Systems (GPS) that will give consumers peace of mind when driving in unfamiliar places. Launching exclusively at RadioShack Corporation, one of the nation's most trusted consumer electronics specialty retailers, MOTONAV TN20 is reliable, easy to use and relieves the stress of driving in unfamiliar places with spoken street names and turn-by-turn directions. MOTONAV TN30, a Bluetooth^®-enabled¹ GPS navigation system, combines the confidence of finding a destination with a speaker for hands-free cell phone connectivity…