Effects of Federal Tax Credits for the Purchase of Electric Vehicles
from CBO Recent CBO Publications
CBO estimates that federal policies to promote the manufacture and purchase of electric vehicles, some of which also support other types of fuel-efficient vehicles, will have a total budgetary cost of about $7.5 billion through 2019. Tax credits for buying electric vehicles—which account for about one-fourth of that cost—are likely to have the greatest impact on vehicle sales. The electric vehicles that are the focus of this study fall into two broad classes:
http://www.cbo.gov/publication/43576