I want to know the answer to the following question:
What type of locomotive technology was to be developed by GE under its Ecoimagination program?
All the background I'm provided with is that "The announcement prompted an op-ed piece in The New York Times to observe that, "while General Electric's increased emphasis on clean technology will probably result in improved products and benefit its bottom line, Mr. Immelt's credibility as a spokesman on national environmental policy is fatally flawed because of his company's intransigence in cleaning up its own toxic legacy."". Is that enough to answer the question?