What components in the speedometer are effected to cause it to just stop working? I know this is a dumb question, but, I want to understand a little better. I was entering the highway the other morning and when I reached to set the cruise control, the speedometer read "zero". It was working perfectly before. I did not hear any noise or notice anything unusual. Has anybody in this forum ever had this to happen? Am I really about to hit my hip pocket? Could the cruise control cause this problem? I use and admire the different points of view that I get when I use this forum. Thanks!