Transport looks like it would be super useful when you travel! As far as City Lens, its a cool idea, but I'm not too into AR so I'd just use Local Scout or Bing Maps unless I was in an area Bing didn't have info for but Nokia did.
These were being displayed as for future use in the US right? Living in Chicago, I use only public transit and I will be giving up the solid Google Maps app on my BlackBerry when I switch to the 900. Public Transit directions are a MUST for me, so this would be perfect.