Boeing at the weekend revealed more details of the concept plane which would fly at up to 5800km/h, 1.6km a second and two and a half times the speed of the Concorde.
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Last week the cost of fuel at Mobil Kingsland was $2.19 per litre. Just 2 kilometres away at Mobil on Karangahape Road the cost per litre was $2.38 - a 19 cents difference.