So, 0-60 mph in 10 seconds will expose you to 0.27g. Barely over a quarter of normal Earth gravity. To equal 1g of acceleration, a car would need to get to 60 in 2.74 seconds, roughly. If we want to be really, really exact, it looks like 1g is getting to 60 MPH in 2.73511683 seconds.
So, we all know 1g is no problem. Tesla Model S that can get to 60 in 2.39 seconds is pulling 1.14g, which is greater than Earth gravity, just by a bit. Again, no safety issue there. If we jump up to the acceleration levels of a top fuel dragster, we start seeing some bigger numbers.
A top-fuel dragster can go from 0-100 MPH is about 0.86 second—rockets don’t even accelerate that quickly, even if they do end up going much, much faster. That kind of acceleration is worth about 5.3g. Plenty, and you’ll definitely feel that (it’ll feel like you’re 5x your weight) but that’s not going to kill you.
SOoooo - he would have to be faster to 60 than a top fuel dragster is to 100