[netsharc]

Ah, one of my abandoned projects was doing this sort of tracking for a car-sharing fleet (think car2go, where the car can be left in many parking spaces in the city when terminating the rental), although with cars the route taken is less certain, someone could rent it from a few blocks away from their home (at that point it would disappear from the list of available cars), go to IKEA, and it could end up near their place (reappear in the list) many hours later. Animating this "journey" would make it appear like there's a car going a short distance, very slowly..

[replyOnce]

I think a good solution for this problem would be to discard all routes where cars take more than twice the expected time. This would result in loosing some legitimate trips (could be stuck in traffic), but by adjusting the threshold this could be alleviated.