I just picked up a GoPro Hero 4 Black from OG Racing with the discount they've offered to Rennlist folks:
And I thought I'd share the carrying case I made to take my camera gear to the track and to stay organized.
First I took a case from an old cordless drill that my brother was about to throw out, and I cut out all the separators and support fins with a wood chisel (could have used a dremel, it's tough stuff though).
Then I took some packaging foam from a big server crate and cut it to fit. I cut holes all the way through for everything with a sharp knife, and cut a slice of each of the cut-out pieces to line the bottom of each hole.
The swim goggles case is great for keeping track of really small stuff like media.
As you can see, I've cut a new hole for my new camera, right next to my original GoPro 3+ Black edition. I also carry my gps receiver, gopro remote (came with my first cam), and a couple tools including a stubby philips for tightening the mounts.
You can also tell that I could add at least four more gopros, but I'd probably have to make another case just for all the mounting stuff at that point. I'd also have to take out a second mortgage, and at some point I'd have to admit to myself that I'm not Ken Block. <-- that's a youtube video about a pro gopro production worth checking out...
I keep charging / USB wires in the little drill compartment with its handy door, which I retained when I cut all the other stuff out of the case. That compartment doubles as the lid for the big opening for mounts.
I've been using this case for a couple years now, and it's been awesome knowing exactly where all your camera gear is. This organization makes it easy to prepare for your track day, too.
I'm just posting in case this provides some ideas you can use. People throw this sort of thing out all the time.