<< State rebates and other benefits (reduced registration fees, carpool-lane access, etc.) in California, as well as in 44 other states and the District of Columbia.
<< Tax credits for infrastructure investment, a federal program which began in 2005 and, after six extensions, expired in 2017.
<< Federal R&D for “sustainable transportation,” mainly to reduce battery costs, averaging almost $700 million per year.
<< Credit for EV sales for automakers to meet their corporate fuel economy (CAFE) obligations.

Same variety of subsidies seem likely for wind & solar energy.  So we're all paying portions of those costs.