What is the thing on top of a car called?

[ErinDella]

Car top pointed thing is shark fin antenna. Currently, shark fin car antennas have been widely used by major international automotive brands such as Mitsubishi, SUZUKI, Mazda, etc. Airflow disruption: During driving, cars encounter air resistance, which increases with speed. Shark fin antennas can significantly reduce air resistance and mitigate the impact of airflow on the vehicle. Even though most vehicles use specialized spoiler devices, shark fin antennas still have airflow disruption effects. Static electricity absorption: After autumn when the weather becomes drier, cars tend to generate static electricity during operation. If this static electricity isn't discharged, drivers may easily get shocked while driving, and it could lead to dangerous consequences at gas stations. Shark fin antennas serve to divert and eliminate this static electricity.