Carcer Gas is a brand of propane from Carcer City that appears in Grand Theft Auto: San Andreas, originating from the Manhunt series.
Description[]
Tanks containing the propane can be seen at various locations through San Andreas, primarily at gas stations and a trailer park on the Flint Intersection. Some Waltons can also be seen carrying tanks on their beds. With the exception of the tanks carried by the Waltons, all tanks will explode if they are either shot at, have explosives thrown at them or are driven into by a vehicle (similar to Explosive Barrels).
The company is headquartered in Carcer City, the setting of Rockstar North's shared universe title Manhunt, in which the tanks are originally used as explosive props.