I was told there would be no math

Honolulu's switch to hybrid buses stalled by realities of costs | HonoluluAdvertiser.com | The Honolulu Advertiser

City study finds diesel-electric fleet not saving so much green after all, recommends scrapping plan

Honolulu's rapidly growing fleet of hybrid buses is not saving as much green as promised, and converting to hybrids has meant fewer new buses and an inventory that is likely the oldest in the nation.
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Hybrid articulated buses cost nearly $1 million each, compared to about $380,000 for a typical 40-foot diesel bus. Previously, the city has said those higher costs may be recouped by long-term fuel efficiency gains. However, the buses are not cost- effective unless fuel costs increase at a rate of 20 percent each year for 15 years, according to the report.