well if u want to take it a little further,the rpm(when it's constant) of the motor does not produce a torque on the chassis.when the speed is constant,the whole car is considered as a SINGLE rigid body.
only a change/acceleration of the rotation produces torque.
this is countered(opposite direction) by
1.the moment of inertia of the drivetrain(normally constant)
moment of inertia is about
2.drag of the drivetrain(which might be constant,but might not also)
so the torque(not motor output torque)but inertial torque(ie angular accel x motor's moment) - moment(drivetrain) - drag = car roll.
car roll would then be product of it's own moment of inertia that is a function of it's weight distribution.