Three ways to get the clue...

Anna's POV:

After Mona's request, Tom started explaining his point of view about the car accident.

Tom: It's like still mysterious for me, and as per police protocols we can do further inquiry only if we find any clue, but I didn't find any clue and I feel the other vehicle hit intentionally the Mark parents' car...

And you know one thing, Anna, when it comes to road accidents, only in the planned murders we didn't find any clue. If it is really a car accident, we might find a reason or a hint or at least a possible clue behind the car accident...

The car condition is perfect, and it is not going in the wrong direction and the speed is under the limit and by looking at the car position after the accident, it clearly stated that some other vehicle intentionally hit the car...