But a renewable energy advocate , Amory Lovins of the Rocky Mountain Institute , says the nation 's car fleet could be converted to hydrogen in less than a decade , and a network of small hydrogen reformers -LRB- devices that produce hydrogen from natural gas or other sources -RRB- could be quickly installed in 10 to 20 percent of the nation 's 180,000 gas stations for $ 2 billion to $ 4 billion .
Amory Lovins /business/person/company Rocky Mountain Institute
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Amory Lovins
PERSON
Rocky Mountain Institute
ORGANIZATION
/business/person/company