An 8K 3D rendering, capturing a future World Expo as envisioned by the style of Marco Brambilla. This artwork features a network of AI avatars in a utopian setting, depicted in a vibrant, hyper-realistic expo environment. The avatars are shown in an advanced, digitally created world that reflects a utopian ideal, with installations that mimic advanced ecosystems and innovative technologies, all under the theme "Approximations of Utopia." --ar 37:11