As Quil said, these won't completely remove roughness. That would be impossible. But they would make the ride more comfortable and enjoyable by reducing roughness to a comfortable level.

The Beast at KI is a great example of this. That coaster is over 30 years old and still running PTCs, and I wouldn't change it for the world. It is designed not to have airtime, but to scare you beyond belief. Anyone who has ridden the ride at night can tell you that if the ride was smoothed or Timberliners were put on the ride, it would lose the luster that has made it an amazing coaster, and one that all enthusiats should ride.

So even though these trains are a technological marvel and they're something that everyone is excited about, I'm not sold on them. Don't get me wrong, I think that smooth rides are great, but like I said before, part of the thrill of a woodie is that feeling of being out of control (not like SOB, but like Blue Streak). Perhaps its just nostalgia, perhaps its the fact that I'm resistant to change, but whatever the reason, I'm not sure that these will make the #1 woodie any better, and perhaps they may make it worse.