Visioneers base their imaginings on detailed engineering studies and technical designs.

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Its regional operations in North America, Europe and Asia (not to mention South America and Australia) operate almost autonomously, selling vehicles like the Focus that are similar but often based on unique designs and engineering.

FORBES: Back To The Future

The Detroit News and Detroit Free Press both reported Friday that GM is moving the engineers -- who have been working on the fuel-cell technology in the company's advanced development laboratories division -- to the company's core production engineering division, which designs vehicles to be brought into production.

CNN: GM takes step toward fuel-cell car

So sloppy was this project that by the 1980s, engineering errors had crept into some designs.

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More such engineering improvements will come with future designs.

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Suntech Power designs, develops, manufactures, and markets photovoltaic products and also provides engineering and construction services for building solar power systems.

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For unlike basic space systems engineering, space architecture must inherently incorporate sociology, psychology, civilization, culture and aesthetics in its designs.

FORBES: Space Architecture And View Condos In Low Earth Orbit

Caltrans, which designs and manages the state's major roadworks, is widely respected around the world for its engineering prowess and professionalism.

ECONOMIST: High-speed trains