Sharp. Thanks! In some cases we mix up (slow) motorized transport and cycling. We only categorize walking, cycling, running, active (active at one location) and motorized transport, so any other moving activity might end up in one of those categories. For daily use our tracking is pretty accurate for most activity types and users can manually correct any mistakes.

I see also in Dublin, some naughty person had their phone on in an aeroplane :-) You can see the path of the plane landing and taxiing to/from the terminal

The ferries in NYC appear to get classified as walking, but IIRC none of them are drive-on ferries so that's probably fair.