My DH did the ride-along experience on our March trip. He LOVED it. It was the highlight of his trip.
(The cars go faster for the ride-along, than for the driving experience, since they're driven by a professional race car driver. I think he said they went 140mph on the straight sections of the track and 90mph on the curves.)
We found a coupon code on here, so we only paid around $50 for the experience. He did however purchase the plaque with his photo in the race car. I think that was under $35.
When you get there, you're suited up and then you go out to a waiting area. Those that are doing the driving experience get instruction from one of the drivers. All of the men and women wait together on bleachers, for their turn.
Off to the side, there are bleachers for family to wait on. There is also an area to stand, which is uncovered. All of the bleachers are covered.
Here are some photos of our visit: