got cruise?

We took a small trip this weekend, first to Dothan and then on to Crestview. I always use cruise control when I drive. I can't stand it when you're going down the interstate and some vehicle is constantly speeding up and slowing down, even if it's just 1 or 2 MPH differences. Sometimes you're passing them, then they pass you, then they ride beside you not letting anyone around, then they do it all again. I know some vehicles don't have cruise, but a new Jag? Grrrrr.