I watched the vid you made, it looks pretty cool, and nice job
Only problem I would see with that is that people would get killed at the very beginning, then the people who got out would be able to get all the navs, and if one person got killed out of a hog, around the middle of the lap, then it would be really hard to get back into the race, if you know what I mean. I was thinking about this, then I thought, you could have a hog teleporter at each nav! (one way, of course), just like in Coldsnap. Then, people/hogs could go through and link up with allies and stuff, you could even label the teleporters and navs to make it easier to communicate.