content: Before buying the product, I did not think to test my laptop in my vehicle. If I had, I would not have bought this product. I have the 2004 version of Streets and Trips on my desk PC and use it a lot and thought it would be cool to get the GPS version for my laptop to actually use on a real trip. The first time I tried to use it, I realized my laptop screen went unreadble in bright sunlight. My entire justification for buying went out the window. I did not need a second copy of S&T for a laptop and I certainly did not need the pricier GPS version.