Seriously though, RIP Mr. Walker. Shame it had to happen so. Hopefully the community learns from this (though they rarely do), and keeps the high speeds to a race track, with proper safety gear in place.
I found out late last night as I was getting ready for bed, and to hear that he was just a passenger... but the driver was a pro. Shitty way to go, putting your life in someone else's hands, only to have something like this happen.
So yeah, save it for the race track, y'all.