cruise control actuator for throttle by wire?

[Chris Conlon]

I saw a few days back where someone mentioned using a cruise control
actuator to adjust idle speed. This is probably way silly, but I
wondered if anyone has tried to use a cruise control actuator (and
a feedback system, etc) to make a throttle by wire system? I imagine
that the system would be too slow at least, and probably too inaccurate
to boot... but I'd be interested in hearing anyone's experiences with
any similar project.

   Thanks in advance,
   Chris C.