2014 Chevrolet Volt gets massive price cut ($5000)

Just guessing that the source may not be completely unbiased!

In a model year, sure. However this may be the last year before the refresh. With the Cadillac ELR coming out, it is a coupe on the same tech, there definitely needs to be more separation in price. Finally other cars in the category (green cars) while not exactly the same have had cuts as well. The Leaf by Nissan saw price drops once American production started.

I don't know if the tax credit (7500) has a cutoff based on sales, previous incentives for some hybrids and diesels did. It most likely comes down to, we need to move these now, we need to get the numbers up to get better discounts, or just maybe the tech is maturing faster than expected.