On two separate rides with my Cateye Padrone, I looked down while stopped to see that I was going 62 miles an hour and racking up huge miles by the second. I had recently decided to try wireless again after I had given it up because it would stop working when the temperature was below 25 degrees. Realizing that I only wanted basic functions anyway (I hate having my cycling experience reduced to numbers), I got a Cateye Velo 9 wired computer for each of my 6 bikes. Problems solved.