I've never heard anyone express torque that way, although I know what you're talking about. I was just referring to the dyno equivalent torque which is equivalent to the flywheel torque minus losses. If I were going to take the torque multiplicative effects of the drivetrain into consideration, I wouldn't express the final value as a torque at all but as a force, which is the linear force applied to the ground, acting on the tires to accelerate the car. That's more useful because it can then be translated into an acceleration value via newton's law.
