They might be vortex generators of some sort, or fake VG's so customers would think a lot of research went into optimizing the air flow in that area.
My best guess is that the bulges are there to make the panendermic semi-boloid slots underneath function without hindrance.
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2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
lifetime FE over 0.2 Gigameter or 0.13 Megamile.
For confirmation go to people just like you.
For education go to people unlike yourself.
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