We last chatted with the Alliance of Automobile Manufacturers at the New York Auto Show. We heard then about the Alliance's safety and eco-related stances. On Monday, the Alliance will announce that 1.8 million alternative-fueled autos (diesels, hybrids and flex-fuel) were sold in the U.S. in 2007, up just a bit - 250,000 - from 2006. Both hybrids and flex-fuel vehicle sales climbed while diesels dipped. The Alliance believes that more than 2m alternative vehicles will be sold in America in 2008. The hurdles to wider acceptance are the same as we've heard before: high cost of diesels and a lack of E85 fueling stations (to say nothing of hydrogen). Still, 1.8m vehicles is not insignificant. These aren't perfect green rides - I'm looking at you, Escalade hybrid - but in the uphill battle to green up America's fleet of vehicles, it's a start. You can download a PDF that lists all of the Alliance members' 70+ alternative fuel vehicles here. More details after the jump.