Cars, bikes can coexist in vibrant cities (SF Chronicle)

The American neighborhood since World War II has been built on the back of the automobile. In some parts of the country, it's impossible even to run out for a gallon of milk without a car. The growing threat of climate change and the need to reduce greenhouse gas emissions means we can't continue building like it's 1949. But the ubiquity of cars in our lives and our urban environments makes it unlikely that the automobile will disappear any time soon. Read more...