The 2011 Chevrolet Volt electric car qualifies for a federal tax credit of up to $7,500, effectively reducing the net base price from $41,000 to $33,500. Some states offer additional purchase incentives that can be combined with the federal credit. Other electric vehicle-related perks that vary by city or state include single-occupant access to carpool lanes, free metered parking and significantly reduced vehicle registration fees. Home charging stations, which cut charging times in half compared to standard wall outlets, are also eligible for attractive incentives. You can find more incentive information at fueleconomy.gov and pluginamerica.com.