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

Hardware-accelerated WebGL maps don’t support Google Maps layers. You can add them, but they won’t be visible.

You can 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 Google Map type 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);