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The thing is though that rollers only measure the 'at the wheel' figure. They then use a formula to calculate the flywheel value. The better rolling roads calculate the transmission loss for the vehicle by unloading the engine and letting the rollers slow naturally and therefore find the resistance. Other rolling roads use a pre-calculated loss averaged for a sample set of cars of the type.
The only way to get a true flywheel value is to take the engine out of the car and connect it to a dyno. Rolling roads are not dynos.
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By how much do those who have gained by war fall short of the number of those who have perished in it? No doubt you will reply that there can be no comparison, that the dead cannot be numbered, while the living who have been rewarded may be summed up with three figures.
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