Surburban Slums?

According to this article, the so-called advantages of suburban (sprawl) living may begin to disappear pretty quickly:

If gasoline and heating costs continue to rise, conventional suburban living may not be much of a bargain in the future. And as more Americans, particularly affluent Americans, move into urban communities, families may find that some of the suburbs’ other big advantages—better schools and safer communities—have eroded. Schooling and safety are likely to improve in urban areas, as those areas continue to gentrify; they may worsen in many suburbs if the tax base—often highly dependent on house values and new development—deteriorates. Many of the fringe counties in the Washington, D.C., metropolitan area, for instance, are projecting big budget deficits in 2008. Only Washington itself is expecting a large surplus. Fifteen years ago, this budget situation was reversed.