Dan Gurney was such a beast of a man. I'd love it if you could make a video on diffusers (and ground effect in general).

Nice I just suggested a driver of an Evo 8 that they should perhaps try a gurney flap on the stock wing to improve downforce

Kindly try to make videos on all aero terms/abbreviations such as vortex, AERO wake, bernoulli principles, drag, rear wing, front and rear diffusers cornering forces, g-forces, load transfer with animations for better visualisation. It would really help students. There afr very few people in this domain so, keep up the good work.

You see allot gurney flaps when density of air is lowwer, hot and high tracks, as this decreases both lift and drag.