See Differences between GoogleImageModel and GoogleLayer for a high-level overview of the different Google Maps APIs in LuciadRIA

Google Maps layers are not supported in hardware-accelerated maps. You can add them, but they will not be visible.

It is possible to add a Google Map to a LuciadRIA map as a layer. To add a Google Maps layer, create a new instance of a and add it to the Map. You can use the mapType property to select the type of Google Map you want to visualize. See the reference documentation for more details.

Program: Creating a Google Layer and adding it to the map (from samples/googlemaps/main.js)
var googlelayer = new GoogleLayer({
  mapType: "hybrid"
map.layerTree.addChild(googlelayer, "below", grid);