자율주행차가

In a sentence

• 자율주행차가 고속도로에서 주행하고 있습니다.

  The self-driving car is driving on the highway.

  Here, '자율주행차가' acts as the subject of the sentence, denoting who/what is performing the action of driving.

• 나는 자율주행차가 편리하다고 생각합니다.

  I think the self-driving car is convenient.

  In this sentence, '자율주행차가' is the subject of the embedded clause that expresses the topic of thought.

• 자율주행차가 등장하면서 교통사고가 줄어들고 있습니다.

  With the advent of self-driving cars, traffic accidents are decreasing.

  Here, '자율주행차가' sets the subject of the main clause, integrating with '등장하면서' (with its advent) to highlight the causative relationship.