A question for anyone who has used visibletesla, or other API tools while the Tesla has been on a ferry, train, truck, etc. Is the speed reported by the API from the wheel sensors? or the GPS? I'm thinking of putting together a quick script in Octoblu to warn me if my car has been towed, I can look for changes to the GPS location, but it involves math with GPS coordinates, and GPS can jump around a bit on it's own anyway, seems it might be easier to check for speed, and basically have it notify me any time the car reports a speed while in park. Obviously this will only work if the speed is from GPS, not wheel sensors, and will give false positives on a ferry, but I think it would still be a useful little thing. So, does anyone know how the car behaves in situations where it's moving, but in park?