market this.

[acroyear]

The Chevy Volt Gets 230 mpg? Only if you use bad math. : Good Math, Bad Math:

Here's a quick bit of obnoxious bad math. I saw this myself in a link to an AP article via Salon.com, and a reader sent me a link to the same story via CNN. It's yet another example of what I call a metric error: that is, the use of a measurement in a way that makes it appear to mean something very different than what it really means.

Here's the story. Chevy is coming out with a very cool new car, the Volt. It's a hybrid with massive batteries. It plugs in to your household electricity when you're home to charge its batteries. It operates as an electric car until its batteries start to get low, and then it starts running a small gas motor to power a generator. It's a very cool idea. I'm honestly excited about cars like the volt - and Google helped develop the technology behind it, which biases me even more in its favor. So you'd expect me to be very supportive of the hype around it, right? I wish I could. But GM has decided that the best way to promote it is to use bad math to tell lies to make it look even better than it really is.