As mentioned before we need to make sure we have some way to keep everyone on the track to keep it uniformed, and not turn into a 'drive over the whole island' kinda thing.
To do this we were thinking of making walls to the circuit by copying the completed track then hollowing it out. We could also make it look more like a real racetrack by constructing some tires so we could make tire walls like in real life.
So as of yet we may use both or just one of these, only time will tell.
Also so our contenders don't have to fly into the track we will make a ramp to go across. It will be a bit less hectic then.