There is currently a Federal tax credit of up to $7,500 for the purchase of an electric or plug-in vehicle ($2,500 plus $417 for each kilowatt-hour of battery capacity in excess of 5-kilowatt hours).
Many states additionally offer state tax credits of various amounts. For example, in the state of Colorado "An income tax credit of up to $6,000 is available for a motor vehicle that uses or is converted to use an alternative fuel, is a hybrid electric vehicle or has its power source replaced with one that uses an alternative fuel."
Oregon does not currently (no pun intended) offer any tax credit for electric or plug-in vehicles; only a small tax credit of 25% up to $750 for the installation of a charging station. Are we going to let Colorado put us to shame?
Given that transportation is a major contributor to CO2 and NOx emissions into the atmosphere, and hence to anthropogenic global warming in all states, not just in Colorado, Oregon also needs a substantial tax credit to promote the purchase of electric and plug-in vehicles.