I got one, but I must say that there is no support at all for it, especially in Croatia - it's not even on sale here.
It seems as if it's Nokia's adventure into unknown, and as such, product that is best to be forgotten

I can say that there is no coverage for Croatia except for major towns, but Nokia Maps on the phone itself shows the places where N500 just shows blank screen. I really don't know where to update maps, I'll try with Nokia Map Loader, as folder structure seems to be the same.
I have 16 GB card in it, which is for music, you can connect it to car stereo via audio-cable or FM transmitter. Unfortunately, there is no playlist editor of any sort, so it's really hard to listen to what you want, when you want, and it does take a while to load all tracks on each boot-up.
Cool thing is, you can also use it as a BT car-kit, which works fine, you can also download contacts from the phone. No support for SMS, though