Quote:
Originally Posted by Xist
They got a Ford Fusion, put one hundred pounds of modeling clay on it, drove it one full mile, carved out 1,000 dimples, put the dimples in a box in the back seat, drove another full mile, and claimed that it was 10% more fuel efficient, which, according to what I have learned here, means that it was 20% more fuel efficient, which is a huge amount. A full boat tail makes a car about ten percent more efficient!
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That's what we call an A-B test. Maybe an A-B-A test would have shown a different outcome. It's certainly an interesting result but one that really needs a revisit. Two directional A-B-A, and the weight of the clay needs to be carried in 'A' tests, which I don't remember them doing.
It wouldn't be the first time they've messed up.