Mr Fox unveiled an even more ambitious scheme to improve infrastructure in southern Mexico and Central America.
Some might object that root-and-branch tax reform is a hopelessly ambitious scheme, but this only encourages Mr Forbes.
Three art galleries could be created in Birmingham as part of an ambitious scheme to attract investment in the arts.
Under an ambitious scheme, it could be developed to take goods by road and rail between Gwadar and south-west China.
ECONOMIST: More extremist attacks��and establishment fantasies
Come up with a wildly ambitious scheme, secure wealthy backers, push the scheme at the highest level and don't take no for an answer.
Then there's the final component to Horn's grandly ambitious scheme: He vows that most of his megabudget projects will be high-quality films with artistic heft.
The engine is for the Skylon project, an ambitious scheme for a craft that would realise a long-cherished dream: to fly non-stop from airport to cosmos.
The most ambitious scheme so far is Intertrust's technology.
Over the past few weeks, Bezos has introduced an ambitious scheme to stream video over the Web and gushed about his personal Kindle, the electronic book-reading gizmo Amazon launched late last year.
He added that the scheme would "not significantly impact on this ambitious regeneration scheme and ultimately the government will decide whether to grant the order based on the public interest".
Before the summit on March 10th, some of those most closely involved had privately voiced fears that the ambitious pedestrianisation scheme was running into political trouble.
As the region's population goes on growing, several plans for improving its infrastructure have emerged, ranging from a central-area project developed by the city's planners to a more ambitious regional scheme that comes from a group called Metropolis 2020.
Mr Fox is promoting an ambitious joint development scheme for Central America, called the Puebla-Panama Plan.
So he is not prepared to wait for the private sector to create jobs, but has embarked on an ambitious state job-creation scheme, which will recruit tens of thousands of young people to work in job centres, town halls, sports stadiums and the like.
The scheme is not particularly ambitious: quite a lot of the reductions it seeks, especially in the early years, will be bought from developing countries, using carbon permits generated by the United Nations' Clean Development Mechanism.
Sir Rod's most ambitious recommendation was for a national road-pricing scheme to clear Britain's sclerotic highways.
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Mr Vaizey described the scheme as "over-complicated, over-ambitious and badly executed".
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