I am in need of some help I was driving back on the freeway yesterday and I was going around 70 and something caught my eye on the panel it was the speed gage. It had dropped to 0 then back up again to 70 the speed limit that I was going. Then back to 40 then back to 70 again. I never hit the brakes or let off the gas what so ever. Anyone else have this problem? What is the problem? Suggestions?