"Raikkonen brought out the red flags in the early stages of Sunday’s race after losing control of his car on the Wellington Straight and striking the barriers with an impact measured at 47G. " in england at silverstone and he got out and walked away....amazing

What

He's talking about Formula 1 racing. And I believe it was 4.7G's.
(He's speculating at how someone survived a big crash in fancy expensive exploding cars)

yes formula 1 racing and it was 47 and having seen it , i was shocked by the terrific impact you can see it over at f1.com and then to see him hop out and limp away amazing tremendous changes since the old days

If it were 47G's, during the crash he'd have weighed nearly 3 tons.
Just looked it up and I guess you were right. Wow. He's gonna have some massive damage around where the belt is and the helmet. The impact would have made him unconcious or black out!