2018 RS5 Side window rain/wind deflector/guard/visor
 

The door frame/window design does not channel water away worth sh%t. Need recommendations on accessories or even a DIY to keep rain from flooding in if I so much as crack the window while the car is wet (during or even after rain)...e.g. at drive-throughs, ATMs, venting smoke, etc.

I've searched for deflectors made by all major manufacturers and none seem to make one to fit this model or similar.