The problem is that you (like me) have not the knowledge to dictate if it's realistic or not, the difference between us is that you have preconceived ideas, and stick to them, while I have not. I've never raced a race car on a track, so I have no idea how it would feel. I accept what RF2 developer grant me as the best they can achieve. When I make aerobatics in the flight simulator I don't question the flight model, the physics is quite a well established science, I don't need to question it everytime. You decided that the radical must be driven on rails, and discovering that sliding around turns is faster, instead of make you reconsider your idea, make you reconsider RF2 credibility. Your choice.