Mercedes bringing hybrid tech to luxury S550 in 2015

Mercedes is pairing brains with brawn, as they introduce their first luxury hybrid car, the S550 plug-in. Marrying their penchant for luxury cars and hybrid technology sounds simple enough, but in true Mercedes fashion, they upped the ante. What you're left with is a familiar car with technological breakthroughs at every turn. According to Mercedes, the S550 Hybrid is the …