Monday morning I went to drive the War Wagon, my green '73. About two miles from home I heard shh-shh-shh noises and I was thinking, "not the transmission again!" and about the same I noticed the speedometer was going wild- I was maybe going 45-55 mph but the needle was all over the place- mostly pointing towards the 110 mph mark! The car runs ok for her, but I was naturally worried so she went home and I took ever-reliable Ruby to work. After I got home I looked under the hood and saw nothing amiss. Can anyone tell me what the heck happened? Thank you.