Well....I'm not so sure. Bimmer and I follow each other as closely and cleanly as about any two drivers in Forza, a function of the amount of time we've spent racing together. Our races are almost always close and hard-fought, assuming we're bringing roughly equal builds to the track. I'm not sure there was a clean pass in our three or four races on DB yesterday. However, part of the problem is the braking zones. Long story short, the braking zones can be a bit deceptive, especially if you usually use DB as a test track for RWD cars (I do). It's easy to brake much later than is optimal for an FF. I tend to pitch a car into the sawteeth with a little oversteer and some pretty late braking, or at least use throttle oversteer to get through that section. In a FF configuration, though, that doesn't work. I suspect someone, through muscle memory or whatever, will brake late, tapping the next driver up, who will then tap the next one up, and so on.
Also, if #2 gets any kind of a run on #1 off the line, there will be problems. I've taken the sawteeth two wide ONE time, and it was with Fit in the S^4's. We bumped each other around a bit, but since the cars are basically tanks, it was cool. These cars are much less tank-like. As the odd-numbered cars try to set up for turn 1 and even-numbered cars try to get in line (or vice versa, can't remember how the grid is set), there's going to be contact. I can see #2 pushing it, with some very bad results for #1. Of course, all of this may be true further back in the order, too.
At least no one's getting a Corvette enima this time around.