The plan includes a mandatory requirement to change black cars every six years, in order to ensure that the entire fleet will be renewed by 2013. In order to make things easier for limo operators, the plan would also include incentives like tax breaks and low-cost-financing options to make purchase of new vehicles easier. Some dealers announced special offers and a couple of banks announced good conditions on loans. The city is also asking the state to approve the waiver of sales taxes on purchases of hybrids.
[Source: NY Times via LCT (gracias a David)