I think using km/h is more understandable, but looking at the gnome-applet it is showing the velocity in m/s as default and it gives you quite some choices.

So we might think about implementing some choices since there is already a preferences dialog where we can drop the metric/imperial choice and use two comboboxes for temperatures and velocities with (km/h - m/s - mph - beaufort) and (°C - °F - °K) and their localized defaults

I think using km/h is more understandable, but looking at the gnome-applet it is showing the velocity in m/s as default and it gives you quite some choices.

So we might think about implementing some choices since there is already a preferences dialog where we can drop the metric/imperial choice and use two comboboxes for temperatures and velocities with (km/h - m/s - mph - beaufort) and (°C - °F - °K) and their localized defaults