Not sure if this has been made before, but here goes. Picture Badwater Basin - 1st checkpoint. As you round the 1st checkpoint, you would loop BACK around to your spawn in that rocky area to the other checkpoint at your spawn. I'm thinking 2 minutes time, with 1 minute added on each checkpoint. You would keep going until you run out of time. The loop would actually have to be bigger than BB's 1stCP loop. Not only circles, but figure-eights maybe. any shape would work. Also, PLR version. Both teams spawn at their sides of the oval at their own checkpoints. They race around the circuit. Carts clip though each other. Set time limit of 5 minutes or whatever.