because i've been wanting to write something exactly like this in-car demo. this one is using Google Earth/Maps/Local. of course mine will be NASA WorldWind and Virtual Earth (/veWorldWind). the fly-through directions is the main feature i wanted to get in but had to cut based on time. and the traffic reports are the only thing i don't know where to get data from, but is why i was looking into RDS last month. the ultimate would be VE's bird's eye imagery, but i'm not sure if that is feasible yet? could throw in some speech reco/synthesis too. the hardware i'm looking at to write this on is a dockable UMPC.