Let's just start with the fact that all automakers can make cars that get their customers a $7,500 tax credit, not just Tesla. The Volt gets it, the Leaf gets it and others. Up to 200k cars worth.
All other automakers could earn ZEV credits if they were willing to meet emissions goals. It is confidential information what price Tesla gets for the ZEV credits that are bought by other automakers that fail to meet goals.
The absurdity of this article makes me want to pull my hair out.