Thank you, Super Anon!
http://youtube.com/watch?v=7_2XzH_tFyU
I almost forgot this ad for Coca Cola. I can’t describe the ‘style’ of animation and character design– 1940s? But the animation’s a lot smoother and nicer. Mom turns into a superhero (muscle growth, clothing rip) in her car to break through the roof and stop aliens from attacking Earth.