Endomondo set me up for a big cheat this morning. It decided as I left my house I'd already done 73km, and only intermittently updated the time, so I ended up doing 99.15km in 31 minutes with an average speed of 51kph (~31mph) but a top speed of 21kph.
Actually, that was only after I corrected the distance. Average speed was originally 190kph!
You know, I was thinking about this last night. What if there is a bug in the software and at certain places (maybe something to do with the GPS signal?) it can get confused and record the wrong mileage?
anyway, average speed 190kph, must have been a really steep hill, weeeeeeeeeeeeeeeee! lol