If you look closely the car is driving in circles. They revisit the same roads many times in just a few block radius.
I also noticed that it was driving 25... I assumed that was 25 km/hr, which is pretty darned slow (15mph) even on snowy city streets. However, it could be that they're running the car in US mph instead?
And the top cap for the city is 60 (except for things like https://en.wikipedia.org/wiki/Moscow_Ring_Road, you can also go to 80 when overtaking and many people abuse this rule to go ~80 all the time)