The phrase 'how fast is it going' refers to the speed of the vehicle. The speed is the ratio between the distance traveled and the time it takes to travel that distance. That is,
s = d / t
where s is speed, d is distance, and t is time. The speed is calculated,
s = 250 km / 1.5 h = 166.67 km/h
Thus, the answer is letter A.
