We've always heard that you've got to take the bad with the good, but who said it had to be done at the same time? This morning, Government General Motors CEO Fritz Henderson had some rather sensational news to share about Chevrolet's Volt, but according to a report over at Autocar, that very vehicle is looking at some serious (potential) issues. As for the good news, we're told that the Volt has snagged a staggering 230 MPG rating, but we should caution you that it's not as cut and dry as GM would have you believe. We're told that the EPA has released "a new methodology for determining a draft fuel economy standard for extended-range EVs like the Volt," and it's that murky measureme