@delirious_owl it's not about how fast you can go, it's about the average speed of people moving in a city. Cars can go over 150kph and still their average speed in cities is about 13kph, that's why their so innefficient as an urban transport.
I don't know where you live but in most cities I've been and lived in, people on bikes don't need to go fast. They need to move their children, their groceries, go to work in their everyday clothes and not end up sweaty 🤷♂️