I lived in the suburbs of Stuttgart, and the public transit to the other suburb where I worked was excellent. I usually biked, just for the convenience and because it was healthier, but the comparison with the situation in most of the United States is mindblowing.
Well - I bought a car when I was there, too. It's too useful. I guess my overall point is that in Germany, unlike most places in the US, makes it possible to live without one.
Here in Indiana, without a car you don't work. Or buy groceries. Period. You are at the mercy of your friends who do have cars, and it's a real burden for the poor.