To convert the speed from meters per hour to kilometers per hour, you can divide the speed in meters per hour by 1000 to get the speed in kilometers per hour.
In this case, the car is traveling at a speed of 12,000 m/hr. Dividing this speed by 1000 gives us a speed of 12,000/1000=12 km/hr.
So the car is traveling at a speed of 12 km/hr.