This story mixes SI/Customary/Imperial. The story gets a little lost in itself and eventually the 300 mpg is a rounded 282 mpg (Imperial), 235 mpg (US), or, in reality, a 1 L/100 km vehicle. The author gets most of the conversions right, except this one: "Within Audi, it’s simply called the “1.0-liter car.” Audi believes economy could reach 282 mpg or 0.83 liters per 100 km. Since the stories were filtered through the British media, that’s almost certainly an imperial mpg comparison, so we’re down to 235 US mpg." Earlier in the article, he got the same thing right: "“L1″ was a reference to a car requiring just 1 liter of fuel to travel 100 kilometers, equal to 282 imperial miles per gallon, or 235 US miles per gallon." Oops. Conversions are a bear.
