As ministers, representatives, and journalists from around the world gather in Copenhagen to discuss climate change, rental car firms are having difficulty providing enough limos to meet the demand:

Ms Jorgensen reckons that between her and her rivals the total number of limos in Copenhagen next week has already broken the 1,200 barrier. The French alone rang up on Thursday and ordered another 42. "We haven't got enough limos in the country to fulfil the demand," she says. "We're having to drive them in hundreds of miles from Germany and Sweden."

And the total number of electric cars or hybrids among that number? "Five," says Ms Jorgensen.

The local airport is expecting so many private jets that there will be no room to park them; the jets will have to fly to Sweden or other regional sites and then return later for their passengers.

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