Initially launched for Europe a few days ago, I noticed Sygic Mobile Maps for the Nokia N900 now support the US as well. It is the first turn-by-turn voice guided navigation application on Maemo. I’m a little surprised that Sygic was able to deliver their app before Nokia implemented voice navigation to their built-in Ovi Maps.

Here’s a video demo from Sygic:

So far, only the US and Europe are supported, and it appears you have to purchase them separately if you want both. It costs EUR 50 and 60 for US and Europe respectively. Sygic says on their website that further regions will be added and announced gradually.

I think it is a little expensive considering that Ovi maps for Symbian provides free worldwide navigation as well as Android offering free navigation in the US.