Originally offered to Lumia owners, including the (fairly) recently-launched Lumia 820 and 920, Nokia Drive+ is now being offered to all Windows Phone 8 owners.
However, it is not available everywhere, but is currently only being offered in the UK, so that's all that matters as far as we're concerned. But it is still in beta, so it might not be perfect yet. Saying that, you can always feedback to Nokia and get your input into the finished product.Seems pretty decent as it is though and initial feedback is positive. Plenty of features too, including offline support, turn-by-turn, voice guided navigation with spoken street names, local speed limit information with audible speed limit warnings, 60+ different (and free) voice guidance packs and an automatic Day/Night mode to provide you with optimum visibility.It also offers route settings such as avoiding toll roads and motorways, 2D & 3D landmarks on the map, one-tap access to your current position and see the distance from your current position and the option to create, personalise and save your favourite places on your phone.All of that for free. Just as long as you have the right hardware, obviously.