I just happen to be at the Del Mar Racetrack this weekend for my car show and earlier I rode over to the actual track itself to take a look at the Polytrack installation. Wow! What a trip. Right now at the finish line its solid black top...as in a road surface black top. Out on the clubhouse turn they've started laying down the actual polytrack which rests on top of the asphalt.

I had no idea that below the 4 inch surface of the polytrack is hard-as-a-rock asphalt. Bizarre for sure. Wish I could post a picture or two...

Good luck this weekend to everyone with the World Cup and Fla Derby cards...