An 18 YO.
Not too experienced in driving. Not enough time behind the wheel.

If the road, as you say, is bit winding but not terribly so, then he may have been paying attention and his gaze locked onto the cyclist.

Your car/bike do tend to go in the direction of your gaze and he may inadvertently drove the car into the cyclist then proceeded to smash into a utility pole.

But this is all conjecture and nothing will not bring back the cyclist. My condolence to the families who are affected by this tragedy.

There are obviously few nefarious reason for the cyclist's death. I just wish none of them are true.

I also wish the judicial system and police to treat all people the same way. Cyclists have have the same right as anyone else to "life and liberty".

Do maintain situational awareness at all times. Be safe, and ride safe!