Toyota Prius
Who could ever forget the egg-shaped initial Prius, another hybrid model that hit the market early on? The Prius was a comfortable four-door compact car that introduced the world to the new hybrid system that Toyota developed. The reliability of the Prius was a major selling point for the car and the fuel economy was excellent (via Car & Driver).
The styling left a lot to be desired, but the point of the car was to introduce consumers to a hybrid vehicle. The first generation of the Prius laid the groundwork for the hybrid cars we have today. The next generations of the Prius continued to improve build quality and refinement.