This is incredibly common in SF. Many people live in co-ops and it’s created an entire subculture where they coordinate large parties and events both within the co-op and with other co-ops. It’s gone beyond necessity and become preferred by some because they enjoy living with lots of others. Not my thing, but many friends live in co-ops and love it.
I really like the US take on this one actually. I’m pro ebike and absolutely love motorcycles, but 45 mph is too fast to not require a licence.
Here we have 3 classes numbered as such. Class 1 is 15 mph pedal assisted, class two is 20 mph pedal assisted, and class 3 is 28 mph and allows a dedicated throttle. Class 3 often has limitations for certain bike trails, but most class 3 comes have variable modes to limit them to class 1 and 2 speeds. Generally as long as you’re following trail speed limits you really don’t have to worry.
This part varies by state, but in general anything over 28 mph is considered a moped and requires a proper license. As an avid motorcycle rider I feel even 28 might be too fast for non-license, but I also understand keeping up with cars, especially in cities, is way safer so I get why the limit is a bit higher than you’d expect.