I was looking into buying Google Earth plus because it says you can use your GPS in real time on your computer screen. I'm not sure how this would work, since you probably don't have an internet connection while you're in your car. If you find out any information about this, I would really like to know! Thanks!
it's easy! all you have to do, is while you have an internet connection, zoom in to all the places you want to go. this saves it in the cache on your computer. then when you are on the road and have your gps hooked up to the computer, you open google earth as you normally would. it will then give you real time tracking. i have not tested this yet so dont take my word for it.