A lot of Americans recognize Hyundai from its popular Sonata, Elantra and Santa Fe models: stylish and affordable cars. But fewer know the Korean brand is even in the luxury business. Now maybe that’s because the Equus brand is so young or that only about half of the more than 800 U.S. dealers carry the premium model. Either way Hyundai believes the mid-cycle refresh it’s giving the car will only make a surprising sales story that much better.