A 5th World
The transportation grid that is used in standard SR isn't there. Car's do not have data jacks. The cost of driving has gone so high in recent years that most people walk from place to place or take public transportation.
The cities are huge because the poor from the country can no longer aford to live out there. The only people that live out side of the cities are the ones with enough land to sustain their family or with enough money to buy petrol.