The place is all finished. They just leave the plywood top layer on some sections as opposed to a skatelite or similar material.
The place is fun but a nightmare if there are more than 20 people on bikes. I went a couple of times and there were a few kids there that thought they could go like every other run and not wait their proper turn.
EDIT: I just looked at the website. Looks they they changed around the middle of the floor and got started on the bowl. Wow.