Thanks Quboid for posting this.
Electronic Arts today announced that the first expansion pack for SimCity 4, SimCity 4 Rush Hour Expansion Pack is in development at the company"s Walnut Creek-based Maxis studio. SimCity is on the move in SimCity 4 Rush Hour. Players will now have the ultimate level of control over their city"s transportation network by completely taking charge of roads, rail, air, waterways, and even vehicles. SimCity 4 Rush Hour will make its debut to industry insiders on May 13th at the Electronic Entertainment Exposition in Los Angeles and is scheduled to ship in fall.