Wacky Speedometer

I drove down a major street in Philadelphia (CitylineAve). I noticed that my speedometer display had a reading of 75mph, but I know that I could not have been going anymore that 45mph. I had occassion to notice this type of crazy reading again later on the same day- the speedometer reading was 50 mph as I was taking off at a stop light. The way that the lights are situated in most of Philadelphia would not allow enough distance for a Prius to get up to 50mph much less 75mph. I'm not sure if this has been going on for a while or if it just started. Oh yeah, we have had about five days of rainy weather here in Philly. I don't know if the wet conditons could have had something to do with these readings. If anyone has experienced this please let me know. Thanks Tracy2.

 

That was the problem. Thanks for the heads-up Frank.