Mayor Bloomberg wants an all-green fleet — like San Francisco — but that effort has been stymied by a lawsuit. So the 6 Nissan Leaf taxis introduced on Earth Day are a pilot program, but that might lead to greater things ahead.
Don't just think about gas bills when calculating your auto bottom line. Add in maintenance, depreciation, taxes and other factors and it really adds up. The average cost has hit $9,122 a year, or 60.8 cents a mile.
Los Angeles is aiming for a 20 percent improvement in its legendarily bad traffic with smart lights that work together. Other cities are doing this kind of thing, too, with dedicated busways, improved biking lanes and cellphone incentives for taking transit.