Not many people in Seoul own cars (your family might have a car, but its rare for multiple family members to own separate cars) but that doesnt mean the word isn't important!
자동차 - Car, vehicle
Most vehicles will end in "차"
빈차 - Empty car
You'll see this on the front of taxis if they're empty and available. If the light is off, it means someone is in it and they wont stop to pick you up :3
소방차 - Fire truck
Listen at 2:30 for them to say it about a billion times so you'll never forget it ;D
차를 운전해요? - Do you drive?