Quote:
Originally Posted by California98Civic
I was not vouching for the study. The OP mentioned it. I was curious. I am not willing to assume it means they work, either. Anyway, my understanding it that the Evo design's airtab placement took a lot of windtunnel time. I imagine micro adjustments matter a lot.
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One reason there was a lack of widespread adoption had to do with commercial car washes and the damage rotating brushes could inflict on the VGs. Rooftop, satellite antennae must be very robust to survive the rigors of a modern car wash.
The difficulty of hand washing would be a turnoff as well. Class-action lawsuits from those snagging wedding rings on the damned things.