Why did Government Motors (GM) sell only 120 Chevy Volts during the entire month of July in the entire USA? Isn't that 2.4 Chevy Volts for every state? Is our economy that bad?

Plug-in hybrid cars are pretty much an unknown quantity and until they become a more common sight on roads, people will be shaky about buying one.The price of one is much higher than a regular car and fuel emissions / MPG claims have yet to be verified by independent bodies and there has been controversy and criticisms regards the battery emissions.