Jeeeeeeeez...I got a taxi that was doing just fine, then got a fare from downtown Manhattan to Newark airport and was then empty for three hours as it drove slowly back into the city.
Read the asterisks: "Empty Taxis also follow the "best route" between a dropoff and the next pickup. Just as with the trips, this is just an effective way to move the marker around, but doesn't reflect the reality of where the taxi traveled." So that may reflect any number of things going on.
Oh, I got that. I just thought it was a funny quirk of the simulation (obviously in real life, the taxi would never leave Newark without a fare).
Possible? That there was a shift change and the taxi returned to the garage. They might not pick up a fare in Newark since the wait to get a fare can be long, and the "late return" fees for taxi shifts are MASSIVE.
See? You learn things.
I got a taxi that spent two hours picking people up at (what seems to be) Buddakan, driving them a short distance, then going right back to pick up another Buddakan fare. Odd.
Actually, NYC cabs cannot pick up fares from Newark (or from anywhere else outside of NYC), so they always have to go back to the city after a Newark dropoff.