I took one frame and visually enhanced to show the air curtain vent:
![](https://ecomodder.com/forum/attachment.php?attachmentid=34405&stc=1&d=1701533223)
Thanks to @Vekke who made the video that included this frame.
I found one paper about air curtains:
Citation: Ferraris, A., Pinheiro, H., Airale, A., Carello, M. et al., "City Car Drag Reduction by means of Flow Control Devices," SAE Technical Paper 2020-36-0080, 2021, https://doi.org/10.4271/2020-36-0080.
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At $35, I'm not sure I want to buy it.
I did find these YouTube videos that offers insights:
https://youtu.be/ptNnbB7R3SE?si=d9cApYGAvqu-_aSZ
https://youtu.be/mXh2zG4fpb0?si=TIJ22Cei9bNrHdh8
Do you have a concern with wheel well, air curtains?
The reason I ask is I bought a polyethylene piece to block for the front air curtain inlets on my Model 3. My primary plan is to make a conformal cover for the slot outside of the front air inlet. I had also thought about testing blocking of the air curtain slots. But my wheel covers significantly reduce the amount of air leaking in/out of the spokes.
Guess I need to do some tuff testing.
Bob Wilson