A cul-de-sac is a dead end for cars. Maybe these cities focus more on pedestrians than cars? Seems there are some priori for that line of thinking: https://culdesac.com/
> Welcome to Culdesac Tempe
> The first car-free neighborhood built from scratch in the US!
Never heard of that particular "neighborhood" and to be honest, the website kind of looks like a scam. I was just musing about how the name could make sense for the authors.
> Welcome to Culdesac Tempe
> The first car-free neighborhood built from scratch in the US!