If you have unlimited wi-fi, you GOT to subscribe to Google Earth Plus. You can use satellite shots and zoom in as you are driving, even angle it. I like about 1000' at a 45 degree angle. Gives me a great view of what's up ahead.
But of course, it seems to only use Magellen or Garmin, haven't tried others.
I don't know if you are into mapping, plotting & planning & such; but if you are, laptops are great. If Barb will allow you, you can mount it on a swiveling platform in your vehicle. It can be used by the driver or passenger. No drilling required! Easy to install! Here is the link to where I bought mine:
http://www.ram-mount.com/