When everybody keeps talking about magically-propelled cars, moped mounts, and feather falling out of planes, I just keep thinking to myself, "Guys. C'mon, guys. Teleport spells exist."
The public transit system, at least within large cities, would probably be based less around flying trains and more about a "portal network". You know how subway maps represent each train as a straight line with the stop sin sequential order? Now imagine if instead of train tracks, each station was just a depot with several portals leading to other stations? The maps would just be rectangles with color-coded dots, connected to dots in other rectangles.
Meanwhile, large businesses might splurge on their own private portal network. The loading dock behind any major retail store isn't a truck unloading dock, it's a designated teleportation destination. The home office might keep a few portals to its largest branches locked behind an "Employees Only" sign.
Think of what this means for any franchise business-- any of the kind that try to make all their locations similar to each other. What if, for example, there is only one McDonald's restaurant, somewhere in the Midwest, as an enormous complex with thousands of cashiers and grills running 24/7. Now think of the McDonald's closest to you (whether you ever go there or not) and imagine that there's no food being cooked there, it's actually just a kiosk with a stable portal to the REAL McDonald's. Would greasy fast food have the same societal connotations it does now if you could meet someone from halfway across the world while you're out grabbing a bite?