Today I released the second version of MySpeed. This is still an alpha - it seems to work fine, but the reason I'm calling it alpha is because it basically does what it's supposed to do, but I will most likely make some more significant changes to make it more user-friendly.
The big change with this version is trails. You can record everywhere you've been and see where you were and what speed you were doing at all times. For a full list of changes see the release notes.