this product be absolutely amazing . Ive use it for a year now and have use it for travel over 5,000 mile . most of the time I use it in the car along with the beanbag mount . the beanbag mount be one of those item that you just need if you plan on use it in more than one vehicle .  this unit allow you to download a portion of you state into the GPS unit from the computer . it use the communication port so it take a while , but Ive only do this once the entire time ive own it . my family and I use it mostly by typing address into the unit , then allow it to find the fastest or shortest route . its amazing what this little machine can do , and Ive have older model that can do nothing near what this unit can . you can also do a search for point of interest in the area you have download into the unit . this be neat if you be look for a gas station , school , concert location , or something similar where you just have the name of the place .  if you get lose it automatically re-calculate the new route , and beep and show detail as you go . as you near a turn , the screen show the turn and also how many mile \/ foot until you reach the corner . its very helpful . the backlight be also a great feature , and it look really good at night .  the only problem Ive have be the lack of storage space , I can store about 1\/4 of the state of Michigan in the detroit metro area . also , if you miss a turn , it can take a minute or two to re-calculate the route , so you often mix the next turn or two while it recalculate . lastly , ive have it place I on the highway when I be actually on the service street . this have only happen a few time and really wasnt a huge deal .  its definitely worth the price , and since ive have mine ive lend it out many time . its just one of those thing that once you have you cant live without .