Similar to one of the previous videos, but includes about a minute and a half of slow motion footage:
http://www.youtube.com/watch?v=0rXf0F3S_1M
Shows how really god-awfully bumpy Sebring is, and shows a new light in full screen HD on the smoke. It doesn't seem to be doing it a lot compared to the R15 or the old 908, but it does seem to eject a puff of smoke out the exhaust immediately after up shifts and going from partial to full throttle in a sudden burst--could there be some diesel fuel or vapor getting to the exhaust system on overrun, which in theory shouldn't really happen?