Edit - here's a more stringent discussion: http://physics.stackexchange.com/questions/75032/maximum-acc...
High school friction is wrong.
Source: various of my cars (in the past, I just have lame hybrids now) and a g meter
No, it's at least mostly correct. High school friction says
F = mu * W
If it's failed you, it's failed in failing to mention that the tire-road interface can have a coefficient of friction greater than one, and in failing to mention that the normal force can be increased with aerodynamic downforce.
Source: note all the people here who thought it couldn't be greater than one.
As long as the torque is lower than friction you should be fine.
Related: if you've ever wondered why some drag cars (e.g. Funny cars) have short exhaust pipes angled up and back, now you know.
The same kind of thing (not literally, but analogously) is already happening at the atomic level, giving the tires a coefficient of friction of more than 1.
I suspect what the OP was trying to get at is the vector addition of gravity plus the forward acceleration of the car means that the apparent scalar force feels substantially higher than normal (i.e. 1g downwards); it's just poorly worded.