There are, like you said. A lot of other pollutants than just CO2. Focusing on the CO2 only, is a huge disservice.

The point of our project was simply to show just how bad they are. We often hear that we should skip the car and take a bus for the environment. And while I agree that we can all do what we can.

It's like fighting a forest fire by pissing at it. While someone else is literally, dumping coal on the fire.

I don't have the research infront of me. It was a long time ago. But I know the pollutants from coal, was astronomically worse than any other form of power generation.

But regardless if an ebike is powered by coal is worse or not. It is a moot point. The solution isn't to stop using bikes. The solution is to stop using coal.

And on that, I think we agree.