I dunno, I would think the whole apparatus was developed to attract the hot rodders in the 70's when hot rodding on the street wasn't cool anymore all of a sudden (LEO and new law passment).
Just My opinion, but the rise of the Jet Boat seems to exactly coincide with the death of the Muscle Car.
Personally, I wouldn't be without a foot throttle. Clean, simple, and very ergonomic and intuitive with all of us!
Ray