Sport utility vehicles will account for two in five new auto sales in the U.S. by 2020, according to Ford Motor. The automaker says that this year Americans will buy a record 5 million SUVs, thanks to low gasoline prices, cheap car loans and a desire, simply, for functionality and ride of vehicles in the category, per Kevin Schad, brand manager for the Ford Escape. Schad sais sales of SUVs and sport wagons are up 16% this year.