On a north-south road, car A is driving at a speed of 36 km/h (10 m/s). At some time, there was a B car in front of A car 100 meters, and A car overtook it in 10 second. At one time, there was a C car at 100 meters in front of a car, and a car passed it in 20 seconds. At a certain moment, there was a D car in front of A car 100 meters, and A car overtook it in 5 seconds.

Excuse me, the condition of EPDM car.

Car B is stationary (speed is 0), car C is heading north and slower than car A (speed is 18km\h(5m\s)), and car D is heading south (speed is 36km\h( 10m\s)).

I made it myself, maybe it's rough! Add more reward points, hehe!