Here is how I use Vizcom's AI.

I uploaded this car model block out I created a few years ago using Groboto 3D and Silo3d.

Entered some prompt text - 1940s American red sports car with wide white wall tires and pressed render and got the two images below.

This gives me some ideas to complete the model using Blender or 3D Coat. I do not use AI to general a 3D model or a finished image but more for ideas and concepting.