Windows Mobile, GPSdash2
 

Been fiddling with this on the way to work today and for those that might remotely care, and also cus I'm a bit of a nerd. (Nothing like Soulkiss though)

On my 10.626 mile trip...

Speed -
Max speed 40.9 mph.
Average 14 mph (can you tell its London).

Acceleration -
Max 19.6 ft/s2
Min -11.5 ft/s2 (Will have to try harder)

Ascent -

Max 54.1 Feet/min
Min -132.9 feet/min