How are the pictures made?
The pictures are modelled and rendered in Bryce3d (v3.1). The program's strongest side is outdoor modelling and its user interface. After you have added a nice sky and some water, everything looks marvellous. The weaknesses are problems with getting technical stuff in the correct size/position and modelling organic shapes. The modelling tools are also a bit restricted, but it becomes a sport to make whatever you want out of simple shapes like spheres and cubes. Newer versions seems to adress some of those weaknesses and I will buy a newer version any year.