As of 2011 there were more than one billion vehicles in use in the world , compared with over 80 million alternative fuel and advanced technology vehicles that had been sold or converted worldwide , and made up mainly of : *About 34 million flexible-fuel vehicles , led by Brazil with over 23 million units ( made of 20 million cars and light duty vehicles , and 3 million flex fuel motorcycles ) , followed by the United States with almost 10 million flex-fuel cars and light duty trucks , Canada ( 600,000 ) , As of 2008 and Europe , led by Sweden ( 229,400 ) .
There were approximately 80 million alternative fuel and advanced technology cars in 2011 .