SimCity’s “GlassBox Engine” Videos Reveal Sim Systems
Think the first video is "old", other should be a new thing.
Bit bewildered by how jobs are handled. It's really like indicated before, with people possibly having a different job every day. Basically every building that requires workers sends a request for them each morning when they start up.
It does mean production sources draw workers from the most convenient source though, avoiding commuters from clear across the city. Bit easier to manage traffic like that I wager.