From the old butane cylinders place in the trunk to the fortified tanks made of iron and carbon fiber placed under the back seat or the load area. The manufactured adaptations made at the workshop have been replaced by assembly chains similar to the ones that produce gasoline cars. Gas hybrids already offer the same quality and safety standards. The models sustained by compressed natural gas, back by the environmental tag ECO, provided by the Spanish Nacional Department of Traffic, fulfill the requirements to run in the streets with no limitations.
A five stars safety
“Compressed natural gas vehicles are not an adjustment to the gasoline cars, and, since both are built in similar assembly chains, they have to pass the same tests. In fact, both were graded with five stars in the impact tests conducted by the European center EuroNCAP”, claims Antonio Calvo, in charge of Seat’s Sustainable Mobility System.
Carbon fiber tanks
The tanks, that are usually made of iron or carbon fiber, are protected by a cage and, in case of collision, they are more resistant than the conventional tanks. “Moreover, they include special valves that regulate the gas as the temperature in the tank increases, which eliminates the risks in case of a fire in the car or caused by other agents.
The fuelling system also assures the security of the passengers. According Seat’s representative: “Until the system does not sense that the tank is safely closed, it does not active the gas income. In case of a gas leak, it automatically stops the process. Safety is completely granted”.