Future City MadsarNo cars in the land of oil.In an ironic twist, the first city to fully turn its back on petroleum is likely to spring up in the United Arab Emirates, the oil-producing giant in the Middle East. Masdar, a carbon-neutral, zero-waste, walled metropolis now under construction adjacent to the Abu Dhabi airport, will have many innovative green technologies, but it may be most noteworthy for one thing it won’t have: gas-guzzling cars.