Even at 8-9 Gs, an untrained person will have brain bleeds. The weight of the blood in your brain rips through the blood vessels. Acrobatic pilots train for months before they pull 9 Gs, to prevent brain damage, by toughening up their blood vessels.
My Dad flew A-4s in the Navy, during Vietnam. He said flying wasn't dangerous. It was just *really* unforgiving of mistakes.
Street racing seems like that. One mistake and it's "Car vs. telephone pole" and frequently, the paramedics are calling it in as an "unrestrained" driver/passenger.
2006 Black, GT, spoiler delete, five speed, leather, custom welded straight pipes with resonators, sequential turn signals, Hurst Pro Performance shifter. FRPP 4.10s with Motive bearing kit, Spydershaft one piece aluminum driveshaft, w/ Spicer 1330 U-joints, Steeda UCA and LCAs, chrome moly panhard rod. bye bye wheel hop, hello traction! SCT XCalII, BBK CAI, ZEX 100 shot.
I've written a book or two. Google David Buschhorn to laugh at my scribblings.