"Your vertical 4x8 plywood tailgate setup is hardly compairable to hubcaps.. "
My point was, if the moon disc lessens the drag at 120+, it just seems logical that they will work at lower speeds too. The problem is, it's hard to measure the smaller effects.
If there is some positive benefit and costs aren't too high, why not?
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Cheers,
Rich
Current ride: 2014 RAV4 LE AWD (24 MPG)
Wife's Pizza Transporter
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