however, for me the analogy breaks down where will (the engine) drives the emotional nature (trans). i thought of the clutch when someone mentioned about being aware of a rising emotion and seemed to suggest letting it rise, where i immediately thought of disengaging the clutch to starve the rising emotion of the power it would use to disturb consciousness. and, yes, i can raise and lower them at will (it's the same kind of thing that actors do, right?)
in the automatic transmission, the powertrain control module computer (modern cars, of course) contains software algorithms that control shift points and many other aspects of operation, like the degree of "slip" of the fluid clutch, most notably torque converter lock-up where slip is eliminated (commonly called, overdrive). high-performance trannies utilize differently tuned algorithms to maximize torque conversion and power transfer, especially in concert with engine control algorithms.