I always thought it was annoying. As a youngster, I remember riding with my grandpa who always had that in his Buicks. Back in the day of 55mph, he'd set it at 56. It was annoying as heck. 8 or 10 years later, when I had my license, whenever I was in one of the Buicks, I'd set it as high as it would go (and still have to listen to it buzz on my 100mph+ runs!)