Here read this and now the true is found!!!
General Motors Corporation, also known as GM, is a multinational corporation and the world's largest automobile company. GM has been the global sales leader for 77 years (since 1931).
Founded in 1908, in Flint, Michigan, GM employs approximately 284,000 people around the world. With global headquarters at the Renaissance Center in Detroit, Michigan, USA, GM manufactures its cars and trucks in 33 countries. Their European headquarters are based in Zurich, Switzerland. Their Holden headquarters are in Melbourne, Victoria, Australia. In 2006, 9.18 million GM cars and trucks were produced globally under the following brands: Buick, Cadillac, Chevrolet, Daewoo, GMC, Holden, Hummer, Opel, Pontiac, Saab, Saturn and Vauxhall. GM is the majority shareholder in GM Daewoo Auto & Technology Co. of South Korea and has had collaborative ventures in technology and manufacturing with several of the world's automakers.
Daewoo is GM's most recent acquisition, having been rescued by the combine shortly after going into receivership towards the end of 2000. The brand has been retained for the home market of South Korea, although since January 2005 the brand's products have been sold as Holdens in Australia and Chevrolets in other markets.
Holden is the Australian division of GM, although some of its products have been exported to other countries in low volumes, as Chevrolets (Middle East, Brazil and South Africa), Buick (China), Daewoo (South Korea), Vauxhall (UK), and Pontiac (US).
Saab is a prestige marque based in Sweden and sold world-wide.
Hummer and Saturn are almost exclusively sold within US and Canada, with both of these brands having being created within the last two decades. The Hummer H3 is now made in South Africa. This car is also now available for sale in Australia
Opel is the key European brand, although high volumes of its products are made in Africa and Asia.
A buy out in 1925 of British car company Vauxhall led to a GM UK presence, although still producing its own models from its Luton HQ. Virtually all of its models since the 1970's have been identical to Opels,(the last Non-Opel Vauxhall 'Viva' ended peoduction in 1979) Although names were only harmonised with the introduction of the Vauxhall/Opel Corsa 'B'. I.e - Cavalier-Vectra (Ascona), Nova-Corsa, Senator-Omega and the Opel Kadett taking the Vauxhall name - Astra.
So in conclusion I would like to say that GM is only making cars everywhere on the same basic designs and puting different body pannel shapes on diffferent cars with different badges