This is the 14449th most frequent Turkish word.
otomobilleriyle
"With their cars."
In this context, 'otomobilleriyle' indicates the means of transportation they used, emphasizing a possessive were someone's 'cars', and it functions as an adverbial phrase.
Onlar pikniğe otomobilleriyle gittiler.
They went to the picnic with their car.
Here, 'otomobilleriyle' describes the method or preference for traveling, incorporating a possessive pronoun linked to the family in subject.
O aile otomobilleriyle seyahat etmeyi sever.
That family loves to travel with their car.
In this example, 'otomobilleriyle' specifies the mode of transportation, indicating possession and means simultaneously.