If you are like me (that is, always running late), then a personal navigation device borders on divine intervention. Rather than download Mapquest routes into my computer, print them out, then fiddle with the paper maps while driving, the personal navigation device gives me turn-by-turn instructions in real time--as if I had an expert navigator riding shotgun. Unfortunately, the current price of most personal navigation devices is still in the $400 to $700 range. As an alternative, you might consider upgrading your cell phone to one with a built-in global positioning system (GPS) and paying as little as $4.16 per month to have it give you directions.
Text: http://www.eetimes.com/showArticle.jhtml?articleID=206105207