The 1959 Pontiacs featured a "split grille", which came about by accident when the styling studio were exploring grille design. Experimentally, a design for a conventional, full width, oval grille, containing horizontal quad headlights, was cut in two and the halves transposed. With the lights remaining at the extremities, this gave the split center, open ended look of the '59 Catalina. Along with the wider body came a 5" wider chassis in which the wheels were moved out towards the fenders. This not only improved the appearance of the car but led to improvements in ride and handling - spawning the term "wide track" ride and handling which Pontiac would use in its promotional efforts for many years to come.