Bunkie Knudsen took his new plans for Pontiac a giant step forward in 1959 with the new “Wide Track” concept that expanded the tread by over 4.5 inches front and rear in the new Bonneville. Handling and cornering were much improved, and the new stance afforded stylists a foundation for the most attractive and tasteful styling packages of that year. The new Bonneville employed a massive greenhouse, sweeping front and rear decks and, for the very first time, a split front grille that would become a Pontiac styling trademark.

Grand in scale and presentation, the 1959 Bonneville convertible showcased not only its attractive new styling but the famous new 389 Tri Power engine performance that would soon gain fame as the core of Pontiac’s burgeoning per image. Options abound, with power steering and brakes, deluxe wheel covers, Super Deluxe radio, a Safeguard speedometer, outside-operated spotlight mirrors and an exceedingly rare RCA 45 RPM record player!