Surveillance video shows the robber walking around the BP gas station in Bensonhurst Sunday at 11:40 p.m.
Police say the man then got into the vehicle as the driver was pumping gas.
That driver tried to stop the man from driving away with his vehicle.
Three women managed to barrel out of the front passenger door before he drove off.
Anyone with information in regard to this incident is asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782).
ALSO READ | Homemade baby formula could be dangerous: What parents can do amid shortage
* More Brooklyn news
* Send us a news tip
* Download the abc7NY app for breaking news alerts
* Follow us on YouTube