I always try doing this but for some reason I just cant keep my foot out of it... I drive a 240sx every day (rear wheel drive) and I just cant seem to go easy on it....I am gonna try and see what I can get out of it... I will post my results
Thats why I like cruise control. If I'm controlling the speed, the speedo seems to keep going up, if I set it, and take my foot off, I do so much better