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First thing that popped into my head after knowing that the test was over and read some of the results was: How did it match your predictions? What did you think the CD would be? Based on what? Does the measured number match your predictions based on fuel economy? Coastdown testing? Tuft testing? Don't know that you had any specific predictions for this exact configuration, but you still must have had a number in your head that you thought it would do, right?
Your list of improvements seems to go after small stuff. Are there any BIG things that you can't really go after? Plan taper on the bed may be larger than I'm thinking? Maybe ride height? Lots of little stuff adding up?
I selfishly vote for a large vehicle to the wind tunnel next. Some sort of RV or box truck. Love to copy the Dryden van and try a few different tails.
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