> Each time google maps centers on the last route of the
> directionsRenderer. Is it possible to center the map on a specific
> spot afterwards?
You could take a different approach, centre it first and prevent the
directionsRenderer changing it by using the preserveViewport option
http://code.google.com/apis/maps/documentation/javascript/reference.html#DirectionsRendererOptions
> I've tried this with the center_changed event, but
> for some reason I get stuck in an infinite loop.
Yup, if you change the centre you get a center_changed event ...
> My map has different types of streets, which I want to color
> accordingly. I guess using the DirectionsRenderer is the best way to
> do this?
I doubt it, you will probably quickly use up your quota