In a light, high-power vehicle like the typical T-bucket, a cruise control can get you in trouble real quick. If you really insist on one, set it up so it won't open the throttle much more than a cruise setting. That way when you hit "resume" at thirty, she won't go up in smoke when the traction isn't as good as it could be! Same reason you never use cruise in the winter. Go ahead, ask me how I know!!! Having a 400 horse mill slam down a gear and howl out the secondaries on an icy patch will get the old adrenalin flowing damn quick.