The 2000s delivered some of the greatest sedans of all time, and little did we know we were witnessing the end of an era. The sedan had been the de facto king of the road for decades, but the advent of the crossover slowly began to dim its light. This decade was the last when nearly every automaker, no matter how big or small, made sedans a pivotal part of their lineups, producing some greats we know and love today.