eek5 said:car/track modeling companies they outsource to:
http://valkyrie-entertainment.com/
http://glassegg.com/main.php
http://www.dhruva.com/newsite/index.html
http://www.acmedc.com/company_whoweare.html
You're missing Austrian company Rabcat on that list.
http://www.rabcat.com/website2011/index.html
BTW Rabcat is responsible for modeling F50