I always like seeing houses built on bridges. Probably partly because of the cyberpunk Bridge trilogy but also the many historical versions there's just something cool about it. In solarpunk I think it's a neat way to show car spaces being reclaimed by people, and to add a touch of fantasy. I suppose with the loading being different, it'd have to be modified to support the small houses long-term, but given how far in the future the setting is, that seems quite possible.
I also like the various lanes for travel, including the much-narrowed motorized vehicle track, delineated by plants.