The railway companies complain that only 3% of crashes are caused by the sort of human error that PTC is designed to avert and that claims that the system will improve efficiency on the network are unfounded.

ECONOMIST: American railways

Sebelius said that all proposals include provisions to decrease fraud and improve efficiency of the current system.

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The new locomotives are designed for easier maintenance, will improve energy efficiency by using a regenerative braking system that will feed energy back into the power grid and will enhance mobility for the people, businesses and economy of the entire Northeast region.

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Since then, the airline has taken serious measures to improve its efficiency, including rebuilding its luggage system at its Atlanta hub to cut down on lost baggage, and analysing historical cancellation data to adjust the availability of spare aircraft in different hubs in order to keep flights moving.

BBC: 2012's best and worst US airlines

The Medical system, the Doctors and hospitals, would improve in efficiency 10 fold if the industry went paperless.

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Within the school system there is plenty of scope for efficiency gains, which should make it possible to improve both the quality and the quantity of education at a fairly modest cost.

ECONOMIST: Start at the beginning

A123 expects this to lower cost, reduce weight and improve reliability, providing automakers with a cost-effective solution that A123 believes will increases efficiency and minimize system complexity without sacrificing vehicle performance, battery life or driving range.

ENGADGET: A123 Systems' new lithium ion tech keeps EV batteries cool, your wallet in check