[aerohead]

Originally Posted by PaleMelanesian

http://me.dyu.edu.tw/lecture/Vehicle_%20Design(2).pdf - Page 27

Don Sherman IS presuming attached flow in the forebody.So in all fairness we need to understand the context.
It IS Hucho,in his 1st English translation who tells us that at the time of printing (mid-1980s) that virtually all production cars have good enough noses so as to achieve attached flow over the windshield header and around A-pillars.
Some of the rooftop carriers have rather sharp trailing edges,so we'd want to be mindful when reversing them.