Jim Fletcher, a mechanical engineering doctoral student in fuel cell technology, said the bus is 10 percent more efficient than comparable diesel buses -- a first step in what researchers expect will one day be a far more efficient form of transportation.

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Chuck graduated from the Illinois Institute of Technology with a degree in mechanical engineering 60 years ago and went to work for a large manufacturer designing hydraulic valves.

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Gupta (63), born in Maniktala, India, graduated from the Indian Institute of Technology with a degree in Mechanical Engineering and then went on to receive his MBA from the Harvard Business School.

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Tewari graduated with a mechanical engineering degree from the prestigious Indian Institute of Technology Kanpur in 2000, then worked as a business analyst for McKinsey in Mumbai, where he had the opportunity to see Indian business magnate Mukesh Ambani launch Reliance Infocomm in 2002 and usher in a digital revolution in India.

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Born in 1968 in the town of Hisar in the northern state of Haryana to middle-class parents, Mr Kejriwal graduated from the prestigious Indian Institute of Technology (IIT) in Kharagpur with a degree in mechanical engineering.

BBC: Arvind Kejriwal

"Based on our analysis, the performance of A123's new Nanophosphate EXT at high temperatures is unlike anything we've ever seen from lead acid, lithium ion or any other battery technology, " said Dr. Yann Guezennec, senior fellow at CAR and professor of mechanical engineering at the Ohio State University.

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