I agree with the earlier comments. This is a 1.0 release at best. I also own the iphone version and it is superior. There is no multitasking in the android version. Call comes in, navigation is interrupted and relaunches after the call. Continually recalculates the route - it mentions due to traffic, but there are no traffic issues.
One other annoyance - I have noticed bad routing choices regularly. Matter of fact, it generates different routes than the iphone version of their software. Very perplexing.
On a droid x, the display is smaller than one would expect. The android status bar is always visible, it should be hidden until an alert comes in. Also at the bottom of the screen there is a big black bar that has a choice of the name of the street you are on or the name of the street you will be making your next turn. The bar is too thick and eliminates valuable screen real estate.
To summarize, has value but needs a lot more work.