One time I pulled onto I-80 in Indiana and, before I got settled in, I was over the speed limit. I started to correct it right away, but, needless to say at the exact same moment that I realized my oversight, so did a local traffic policeman. After I pulled over and rolled down the window, the first words out of my mouth were, "I'm sorry." I think the guy was taken aback at the lack of argument. I wasn't ticketed; although, I think I might have gotten a paper warning.
I never use cruise control. I don't like the way it keeps the vehicle going. If I should pass out or become distracted, there could be a problem. On the other hand, it's really difficult to maintain a fixed speed without it. I'm not sure it's supposed to be used while towing a vehicle. It's probably not much use from about Palm Springs where the freeway adds more traffic lanes for obvious reasons, to well into I-5 past the city.
--pat