Highway Driving
Once you have completed your project, double check the Project Rubric to make sure you have addressed all the rubric points. Your project will be evaluated by a Udacity reviewer according to that same rubric.
Your project must "meet specifications" in each category in order for your submission to pass for at least one lap around the track. If you are happy with your submission, then you are ready to submit! If you see room for improvement in any category in which you do not meet specifications, keep working!
Once you have a path planner that is able to complete at least one loop around the track, and pass the rubric specifications, go ahead and submit.