Yeah, I just heard this from Dirt Fish news.
This truly and completely does suck, and like they said on the above Dirt Fish site; the ARA series will just not ever be the same again, you tube will be much too quiet, and his poor family is overcome with grief.
Motorsports has lost an ICON, as no (even multiple) World Rally Champion was ever as much of a 'household name' as KB, due to the whole Hoonigan Gymkhana series phenomenon.
But the man did love rallying (both national, where he REALLY wanted that title), and the WRC/international rallying where he had the best overall results of any U.S. citizen besides John Buffum.