As we're sure you've noticed by now, General Motors has been making lots and lots of waves over the past few days announcing the pricing information (finally!) of its 2011 Chevrolet Volt. And, you also likely know that the car is capable of traveling at least 40 miles per charge without using a single drop of gasoline. But hat happens when the time comes that you need to pump some good ol' crude into the tank? You'll be using premium.