In '59, the Impala broke away from the Bel Air and became it's own standing model with a redesign so radical, it's still one of the most distinct-looking vehicles in American vehicle history. Almost a full two inches longer than the previous model, the new Impala had a rear "bat wing" lid with "cat eye" sideways teardrop tail lights that flowed with the protruding lid, a style that didn't last long. The front end also got a makeover with a more spaced grille and long drawn-out eyebrow air intakes that no longer leaned over the headlights. Overall, it made for a leaner, more compact look. Chevy stretched the Impala name to a full line, adding a four-door hardtop and four-door sedan.