[dsfyu404ed]

In your scenario the number of trips is the same but the car is more often empty because the parent doesn't have to chauffeur the kids around.

[CydeWeys]

Now the parent can be in a different car at the same time, going something else, thus doubling the number of cars on the road.

[dillonmckay]

Yes, that was the point.

[Moru]

But it still takes up space on the road