Car blueprints:

• SMCars.net
• The Blueprints

Car images, wallpapers:

• Netcarshow
• Dieselstation
• Carwalls.com

3D related forums and sites

• SMCars.net
• XoliulShader II
• Polycount Forums
• Game Artist Forums
• 3Dolphin Forums (Finnish)

Videogame related forums and sites:

• Mak-CORP
• Retroburn Game Studios
• Retropelit.fi (finnish retrogamesite)
• The Borg Gaming website