Late Model Downforce....

[FlatTire]

Do they have any air ducts attached to these holes on the #1 car?

[DEKconsulting]

No ducts at all

[zeroracing]

I am struggling to come up with the reason DEK, I can see holes in other parts of the body but not there.

[CCHIEF]

Their is a Go PRO in there filming everyone looking at them! They sit back at the shop and laugh it off. ..............Actually top secret stuff,info it will get around.... eventually.

[RCJ]

Could be as the car yaws the air flow changes directions.That area is curved and could be speeding up air velocity thus creating lower pressure.Drilling holes helps eliminate this.
Theory #2 I have seen cars that put air under the car to create low pressure.These cars had ducting and belly pans tho

[lindsey97]

Probably better terms to describe it, but it eliminates the air coming around the nose and creating a vacuum effect in the left front wheel well area.

[Stede Bonnet]

Next time you're running a test day at a 1/4 mile track, take the nose, the spoiler, and the right rear quarter panel off and see how she handles. But take it easy if the track has a wall. The good news is that when you hit it, you'll have less body damage to repair.
..

I dunno, Bobby Pierce runs without a RR quarter panel every week and runs pretty good. Not sure why he bothers putting new ones on anymore... His nose isn't much better. LOL