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Autodesk is a world leader in 3D design software for manufacturing, building, construction, engineering, and entertainment. Since introducing AutoCAD in 1982, Autodesk has developed a broad portfolio of 3D CAD software programs to help users visualiz...

Car Design for Automotive Designers, Engineers and Enthusiasts

Yahoo! Answers is a new way to find and share information. You can ask questions on any topic, get answers from real people, and share your insights and experience.

The HowStuffWorks Auto Section contains articles about everything from engine workings to classic cars. Learn about cars on HowStuffWorks Auto.

By Designers, For Everyone

Do you need help or need to ask a question? Can

Reviews and free software downloads for Windows, Mac, Palm, Pocket PC, and Mobile Phones. The best programs and games. Buy software directly online.

CADTutor provides free video tutorials, articles, downloads and a busy community forum for users of AutoCAD and associated software.

PTC develops cutting edge product lifecycle management (PLM) tools, 3D design software, and dynamic publishing solutions. Find out why the most innovative companies choose PTC.

race car engineering, design and construction for amateurs.

Automotive Tools & Equipment for the Professional Technician. Providing the quality tools you need, at a price you can afford.

Texas Instruments (TI) is a global analog and digital semiconductor IC design and manufacturing company.

SAE Technical Papers