What would be the most effective way to implement a power governor on an eBike that can detect and adapt to different riding environments, such as crowded city streets versus open bike paths, to prevent accidents and ensure a smooth ride for both the cyclist and pedestrians? Would a GPS-based system, sensors that detect proximity to obstacles, or a combination of both be the most efficient solution? How could a power governor be integrated into the eBikes existing systems to limit acceleration and speed in crowded areas without compromising the overall performance and responsiveness of the bike?