Gone are the days of being loyal to one brand of car or another.<br /><br />GM owns Vauxhall, Opel, SAAB and 50% of New United (Toyota own the other 50%), Hummer, Isuzu, 20% of Suburu.<br /><br />Nissan owns 15% of Renault. Renault owns 44% of Nissan.<br /><br />Confused yet?<br /><br />Toyota...