You'r better buying a Samsung Galaxy s2 and using the Nav on that. Mine coped in Lanzarote fine when i went on holiday. plus you can buy whatever phone holder you please.
You do incur slight data charges though if you arnt on a decent tariff
Want one of these making for the pub...
http://www.theangelhighgate.co.uk/images/photographs/pubs/55/55_theangel_03.jpg
'Fount' on the right turned out of wood :cool: :cool: