13. Shelby Series 1
After the success with the Viper, Carroll decided to return to the sports car manufacturing business, but with a new project. His idea was to introduce a retro-styled car. It would be a power roadster with sharper handling, more direct driving dynamics, and a modern drivetrain. The idea materialized in the form of the Shelby Series 1, a world-class sports convertible and the only vehicle Shelby built from the ground up. He revealed the Series 1 to the public in 1999. It featured a gorgeous roadster body, a low silhouette, and a design that went back to the mid-60s.
However, under the body, everything was new including the Oldsmobile 4.0-liter V8 engine delivering 320 HP. Since the car was light, the performance was great. In fact, the 0 to 60 mph acceleration time was around four seconds, which was fantastic for the late â90s. Unfortunately, U.S. regulations regarding car manufacturing forbade Shelby from producing his Series 1 as a regular model, but only as a kit car, which he refused. So, due to the limited availability and high price, he only built approximately 250 examples until 2005.