Placing waypoints via a spline curve dynamically makes it easy to change the amount of waypoints afterwards to have more soft steering. Otherwise we would have to add more points manually. This will also make the placement much more organic. I already made a conceptual version of this for us. My next idea is to make some kind of trigger boxes to specify some kind of slow down regions. These boxes will modify the values of the waypoints in edit mode. We have to make a virtual test drive where we have to simulate some specific situations on the track where a car has to brake or speed up and so on. Would be to much work to do it on the waypoints themselves. Especially if we have to re do it because of changes in the track.