Google Maps: Traffic on top of Custom Map

I want to add traffic information to my custom map. Currently I'm using a Tile Layer Overlay on my Google Map to display custom ma开发者_如何学运维p tiles. When I try to add GTrafficOverlay to my map, my custom map tiles display above the traffic information. Is there any way to display the traffic above my GTileLayerOverlay?

(Using the JavaScript api)

You should be able to do this in V3. Take a look at this sample: http://code.google.com/apis/maps/documentation/v3/overlays.html#ImageMapTypes

I tried this out and wasn't able to find a solution to the problem. There is nothing in the GTrafficOverlayOptions and I couldn't find anything in the references about the z-order of this stuff. I have suspect that this isn't possible.

Would love to see an alternative answer showing that I am wrong.