Anything and everything we can do to incentivize people to be more efficient with non-renewable resources is wise. We already give credits for high-efficiency furnaces etc. Why not cars?

This is the future!

They are getting a little less expensive and the credit is an incentive for others to buy them. The are better for our Ozone.

As the prices of electric cars come down and more affordable to not just the affluent it will help improve technology by supporting purchasing it, the environment from carbon fuels, and utilization in other areas of life. If you ask why, I ask why not? If you say stop the credits, I ask why?