EU Car Makers Manipulating Fuel Efficiency Figures
How about incorporating the "cheats" into the final design and making a legitemate 25-50% increase in economy.
Know How To Use a Slide Rule?
The E6-B is a rotary slide rule that pilots use for calculating wind correction angles, time/speed/distance problems, conversion between units (i.e. weight of a certain number of gallons of fuel), and fuel consumption.
It's preferred over digital devices because they still work when the batteries go flat, they are easy to use with one hand, and some models are actually smaller.