Multi-flex mount is not available yet as far as I know, I haven't seen one on any of the factory driver's car either. I heard "reports" that after almost 2 hours of driving like Mike did, fuel spillage during pit stops, foam from tires and crap will build up if you don't clean it between runs.
HAHA!!!
I believe his statement was made for comedic purposes! That's quite funny!
The engine mounts are now in stock and are shipping to dealers as of today, man they are TRICK looking.