Z-Brush? I thought this is a "sculpting" software for organic objects and not for hard surface creation? Now that I have watched some videos: It`s like working with "digital" clay...

Since I have no talent for this kind of artistic sculpting:

Are there "CAD"-workflows for creating models like this?

There are a lot of panels, panellines, holes and other hard-surface type features that should be easy to create with CAD software. And isn`t the whole model a typical "hard-surface" model?