GPS buying guide Getting started If you often travel to new places for work or pleasure,have trouble reading maps,or simply hate to ask for directions Autel VAG505,you might consider a global positioning system (GPS) based navigator for your car. Once you put in a destination,the system will plot a route,give spoken turn-by-turn directions,and show your progress along the route. Most personal navigation devices (PNDs) let you choose your routing preferences,including the shortest distance,the fastest time,or even routes with no toll roads. Some portable units offer special routing options for bicyclists to help them avoid highways and for pedestrians,appropriate routes are provided that ignore one-way traffic restrictions. Some devices even offer a choice for the most fuel-efficient route. You can also use a GPS device to quickly find a variety of points of int ... Read more »