The expanding megalopolis along California's southern coast offers a richly textured setting for studying a host of suburban mobility issues. All the case study settings explored in this chapter represent Southern California's most rapidly expanding "urban center" and stand out as impressive showpieces of mixed office-commercial development. Both developers and public officials hope the trend toward mid-rise and high-profile office construction in suburban Los Angeles and Orange County will prove conducive to carpooling and other commute alternatives over the long run. The chapter examines the two specific projects: Howard Hughe; and Playa Vista. In the west Los Angeles corridor, the planned three million square foot Howard Hughes Center office complex stands out for its proposed pedestrian and transit-oriented design. The Howard Hughes Center in Westchester, does not plan to operate transit on-site, although various near-site transit amenities are being provided and a core complex is being built to allow the possible addition of a transit center sometime in the future.