dhal, thank you, I think I got your point now. Obviously my aversion to 3D is blurring my perception. Besides, for me the simulator is already a replacement for the real thing. Sorry.

rainedave, I'm still learning new words here, but "feeble" is completely wrong in this case. And the only graphic detail my models have is some inscription. The US40 shown above is made by the W3 Group and is really great, especially graphics-wise because they painted even some shadows in Photoshop. Your model looks really great.