AIAM: The Association of International Automobile Manufacturers 
Represents international automakers designing, producing, marketing and selling products in the United States. Includes membership information, news, VIN books in PDF format, and contact details.
http://aiam.orgThe Retail Motor Industry Federation 
Representing the interests of businesses in the automotive industry in the UK.
http://www.rmif.co.uk/
Automotive Suppliers Benchmarking Association 
Provides benchmarking data to member automotive suppliers.
http://asbabenchmarking.com
American International Automobile Dealers (AIADA) 
They protect the economic viability and represent the political interests of America's international nameplate automobile dealerships by educating lawmakers and the public about the benefit the members have on the economy.
http://www.aiada.org/