I pre ran start to mile 230 or so in 07 with a racer. It was fun, but don't do it alone. The pace is fast, there is alot of traffic on the course, and following the marking is a learned skill. The markers are few and far between in places, so you need to have a general knowlege of the area and the course, as well as where to get food and fuel.
The "tech" inspection and start are neat to see, as is the finish.
I drove a chase truck and pitted for the team that year. Driving to Cabo and trying to stay ahead of the race for rider changes is a challenge in it's self, and very dangerous too.