Canvas is still 2D though, so unless they develop a 3D drawingContext for canvas, you won't be able to do what's in this article with the same kind of hardware acceleration. With canvas you'd still need to run all your own poly drawing routines, while I imagine Webkit is able to take 3D CSS properties and map <div>'s straight to polys that render with hardware T&L pipelines. (Which makes me wonder, how the heck are they dealing with Z-order?)