The number four spot on our list is a two-for-one. Hyundai introduced a pair of new Sonata variants in New York: a high-mileage hybrid version (with a unique grille, pictured) and a high-power turbo variant. Hyundai says the hybrid will deliver 37 city/39 highway mpg, while the turbo will offer up a category-leading 274 horsepower. Hyundai didn't announce specific pricing for either model, but said the turbo will be available nicely equipped for about $25,000. Both arrive around the end of 2010.