Hereby I present you some great tutorials for people who are interested in modeling automatas (or prop vehicles) from a blueprint. These tutorials are brought you by the-Blueprints.
Gmax/3dsMax:
http://www.the-blueprints.com/index.php?tutorials/3dmax/ (http://www.the-blueprints.com/index.php?tutorials/3dmax/)
Google Sketchup:
http://www.the-blueprints.com/index.php?tutorials/sketchup/ (http://www.the-blueprints.com/index.php?tutorials/sketchup/)
Other software:
http://www.the-blueprints.com/index.php?tutorials (http://www.the-blueprints.com/index.php?tutorials)
26000+ (and counting) Blueprints:
http://www.the-blueprints.com/index.php?blueprints/ (http://www.the-blueprints.com/index.php?blueprints/)
Enjoy and have fun. :thumbsup: