Well as you can tell in the second video I don't, because my phone was acting up and isn't the best for recording.
The first video with the gps and stuff is an app for an iphone called 'harry's lap timer'. It is an awesome app. It is my buddies phone though and I didn't get a chance to use it at the raceline event. My phone has trackmaster app, but my phone kept freezing and shutting off when I tried using the app, so after not being able to record my first 2 sessions I had to just use normal video. But yeah that harry's lap timer is awesome and really helped me improve from my first time.