How does the i8's hybrid drivetrain work?

I've heard that the BMW i8 has a unique hybrid drivetrain, can you explain how it works?

The i8's hybrid drivetrain combines a traditional gasoline engine with an electric engine. This allows the car to switch between the two power sources for optimal performance and efficiency. The electric engine can also be charged by plugging it in, reducing the need for gas and reducing emissions.

The i8's hybrid drivetrain uses regenerative braking, meaning that energy is captured and stored in the battery when you brake. This allows for more efficient energy usage and can even extend the range of the electric engine. Overall, the hybrid drivetrain provides a smooth and responsive driving experience.