Specifically, the Toyota Prius, launched in 1997, is considered the first mass-produced hybrid vehicle.
However, it's important to note that:
* Earlier attempts at hybrid vehicles existed: The concept of combining an internal combustion engine with an electric motor dates back to the late 19th century.
* Other companies contributed to the development: Many companies, including Honda and General Motors, were researching and developing hybrid technology in the years leading up to the Prius.
So, while Toyota's Prius is credited with popularizing hybrid vehicles, it was the culmination of years of research and development by many individuals and companies.
