i notice new cruise controls keep the speed very constant. Up hills it makes shifting very noticeable and wastes a lot of gas. one should slow down up hills. The very old ones did this because they were poor. I notice most people want to speed up going up hills. Some macho thing. We could probably save 10-15% in gas slowing down. The cruise control people should add an option using tilt, to sense you do not have to maintain sped up hills. Just a button away.
greg