I ran on a Woodgate treadmill back in 07 and it had the same type of belt. It was those strips of rubber like a track instead of a belt. That thing was awesome. It was cushioned and held up fine to me running 80-85% for 200m intervals.
The standard treadmills scare me. The belts can slip with 240+ lbs running on them.
The cool thing about this free runner is that I could work up to a sprint like effort, jump off, and it slows down on its own. I could also start from a walk instead of having to jump on at speed. That’s much better for interval work.