Home field advantage

I have been told that we are not allowed to pre-run the course but with over three months until this years race the videos prove some teams from Mexico have already built their cars and are in fact setting them up and are in the process of testing on the actual route we will be running on. It just goes to prove the home field advantage is hard to beat but it sure as hell isn't going to stop us from trying. I know one thing for sure... They better be a lot faster than they are in these videos.