http://www.alfaromeo.com/
http://www.astonmartin.com/
http://www.audi.com/
http://www.bmw.com/
http://www.citroen.co.uk/ the heritage section is amusing and interesting!
( http://www.citroen.co.uk/microsite/different-is-everything/ )
http://www.ferrari.com/
http://www.fiat.com/
http://www.jaguar.co.uk/
http://www.lamborghini.co.uk/
http://www.maserati.com/jsp/index.jsp
http://www.mercedes-benz.com/
http://www.opel.com/
http://www.peugeot.com/
http://www.porsche.com/
http://www.renault.com/
http://www.rolls-royce.com/
http://www.saab.com/
http://www.volkswagen.co.uk/
http://www.volvocars.co.uk/