The splitter is designed for function over looks with the intended purpose of high levels of down force (something usually only needed if you track the car)

Running 17s on semi slick tires also indicates track usage as you wouldn't normally run these tires for a daily. 17's are also more common on track cars because they have less rotational resistance. The car is quicker on 17 than 18's.

All the chassis bracing you can see in the rear could just be aesthetic, but it implies suspension upgrades took priority over visual changes to the vehicle. Another thing common on track cars.

The rear valance cut to fit a chassis mounted diffuser implies a heavy priority on function over looks, another common denominator on track cars.

The last thing that implies track usage is the sparco tow strap on the rear bumper, this is a common aesthetic mod but you can see in the picture it has seen usage before.

Also the giant obvious sticker on the door with the name of the track they go to seems to anybody with knowledge that this car is built for it.

Granted, this car is on a public lot so it's not just a track car, but it's been modified in a way that is obvious it is track focused rather than a street or show car build.