This is great for anyone planning a road trip. No the missing star is not for auto routing function (I have a gps for that).
The missing star is for a lack of a search function to pull in addresses for sites that you might want to go check out. When you are planning a road trip you end up coming up with all these great locations and ideas of things you would like to see. This app is great because you can drop a pins at all these locations, but you have to know where abouts these locations are on the map. It would be awesome if you could search a location and have that address transferred to your map. It would be great to integrate with 411, your address book, or google maps. As you are traveling around you open up your iPad and presto all the locations you are interested in have pin marks on them and you can see how close you are. Another click and your address book contacts populate the map and the notes has there name autofilled in it.
I would gladly pay the money that I did for the routes app to you if it had this function. This app is so close to what I was describing to a collegue just last week
The real Nate James about GPSnote