State incentive programs for electric vehicles vary in their scope and applicability. While tax incentives are most frequently mentioned, HOV access, toll reduction, and sales tax exemptions are also offered. Please consult your knowledgeable financial planner or tax specialist to determine how the state and federal incentives may apply to you. The US Dept of Energy also maintains an up to date list which can be found here: https://afdc.energy.gov/laws/search