My wife's Honda had a TSB issued for some surging the CVT does on cruise control. They reprogrammed it and nothing changed. When I took the tech out for a test drive he said, "that's not right - you need to have to transmission reprogrammed." I told him I did and he responded, "oh well then that's perfectly normal."
It's pretty ridiculous that the car surges up and down a full 1000 RPM range while on cruise control.