Indeed, stay-at-homes moms save the state's highway infrastructure from meltdown, especially since a "nanny" often drives to the working mom's house, putting three cars on the road where otherwise one would do.
Homeschooling moms further ease the strain on the ecosystem by keeping their kids off the road. The California judged who ruled that "parents do not have a constitutional right to homeschool their children" obviously did not prepare an environmental impact statement before doing so.
Of course, despite my sarcasm, I do hope to model Dawn one day....without the home schooling thou. Seriously, my daughter & I might kill each other.