I had finally a moment monday to try the new molehill API using Away3D 4.0 Broomstick.
The scene has 256 cubes, a "pointLight" and a simple colorMaterial on each cube. By clicking on the page you launch a tween. You can download the project source if you want.
You can test it here : http://dipi-graphics.com/as3/molehill/01/demo3D.html
You must have the flash player 11 incubator installed.