What formula do you want published - the 'process' for weight has been hashed over a hundred times, the SIR stuff is for engineers - the END RESULT IS the point.
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If you can publish the "process" in simple terms such as "weight * X /Y + Z = HP", that would be helpful. And some explaination of where X, Y, Z came from.

I think a simple summary would be helpful as it helps to see where new cars may go in terms of weight.

Thanks,

Bill