“Jobs and commerce have moved to edge nodes, but few people want to live in them. The presence of housing in edge nodes is often the result of spot builders filling in leftover sites with 'affordable' housing units. Nearby freeways make many of these units undesirable. Occasionally expensive apartments for households without children are added near upscale mall areas...but most affluent families prefer to live elsewhere. Ugly environments, cheap gas, and subsidized freeways mean that workers commute to residences far outside the edge nodes, scattering into less dense areas, creating one more suburban pattern, the rural fringes.”