Kelley Blue Book did some research to sort out the most popular auto brands by region. The discoveries were that in the West, the most popular brand to be considered would be Tesla, followed by Scion. In the Midwest, it was Chrysler and Buick, while the South saw Infiniti and Ram. Subaru and Volvo nabbed the popularity contest in the Northeast. Least popular? In the West, Buick and Chrysler. Midwest was Mercedes-Benz and BMW. For the South, Subaru and Tesla, while in the Northeast, Ram and Scion. "Known as the truck belt in America, the kbb.com data reveals Southern shoppers are more likely to consider Ram models than shoppers from any other U.S. region," said Karl Brauer, senior analyst at Kelley Blue Book. "While Southerners are drawn to the ruggedness and durability the Ram truck brand offers, they also are more likely to shop for a traditional luxury brand like Infiniti than shoppers from other parts of the country due to its headquarters in Tennessee." And probably not a surprise: hybrids were most popular in the West, least popular in the South.