Creating cities in Artmatic Voyager?

Hello. I've been wondering if there are any users of Artmatic Voyager Mac rendering software out there who have experience rendering cityscapes. Eric Wenger, Armatic's creator, has a beautiful video of futuristic cities he did on YouTube, but I can't find a tutorial on how to render cities anywhere. If anyone has any guidance or knows of any tutorials that are out there, I'd appreciate the info. Thanks all!