He said 1,000 hybrid taxis would be introduced by October 2008, and that hybrids would gradually replace the rest of the city's 13,000 taxi cabs by 2012. Hybrid vehicles are powered by gasoline and electricity, and they emit less exhaust and have better gas mileage than other vehicles.
While hybrid cars are generally more expensive, Bloomberg said the plan would save cab drivers more than US$10,000 per year in gasoline and other expenses.
The cab initiative is part of a larger push by Bloomberg to make New York a more environmental friendly city. Earlier this year, he pledged a 30 percent reduction in carbon emissions by 2030.