... while it's true enough Gs will cause a human to pass it, it's a lot more of them than any production vehicle can produce. Like, a LOT a lot more.
I'm unaware of any production car that even hits 2gs (the really really quick ones are in the 1.x range... the P3D is not... I think the Dodge Demon at 1.8gs holds the current record)
A typical human can handle ~5gs before any concern for consciousness.
How quick is 5 gs? A top-fuel dragster can go from 0-100 MPH (not 60) in about 0.86 second which is just a little over 5gs.
As a former competition aerobatic and airshow pilot, I will say the G’s effect on the human body in a car is much less likely to cause one to pass out than in an aircraft, for the simple reason that the blood is not pulled out of the brain as badly in a car because of your seating position.
In a top end aerobatic aircraft, the seats are reclined to reduce the effect of blood pooling in your legs and abdomen when pulling G’s, but it still tends to head for your legs in a hard pull.
I routinely pulled up to 7 G’s positive, and pushed 4-5 G’s negative while flying an Unlimited competition sequence. I’ve pulled even more in a few instances. For a few seconds this much can be tolerated, if you have trained regularly and practice often. Negative G is far more uncomfortable than positive G, btw.
You do have to work your way up to this amount by increments, practicing several times a week for a month or so at the beginning of each season, and before anyone says you would pass out when doing this, yes you would if it was sustained, but in competition and airshows, the pull or push only lasts for about 3 seconds before easing up. Picture how long it takes to pull from level flight to vertical, it’s very quick. But sustain it for much longer, and even the most fit won’t remain conscious. It has happened to some pilots I know, usually at the beginning of each season.
That’s why fighter pilots need G suits, they sustain the pulls for much longer in dogfights. A G suit would be useless in competition, by the time the suit inflated the pull would be over.
My Performance X is fast, and my brother’s S is faster, but they are nothing compared to the G’s in an aerobatic aircraft. If you have some issues during acceleration, one thing you can do is, tense your leg muscles, then your abdominal muscles, and grunt loudly (Valsalva maneuver) while accelerating. This helps keep the blood from pooling in your lower body. Aerobatic pilots do this routinely.
The more you do it, the more used to it you get.
I love flooring it in my X, it’s how I get my Vitamin G these days.