How do gas holders work? I presume the weight of the holder creates pressure to distribute the gas across the network, so presumably it is pumped in under pressure? How are they made airtight?
last night parked car up and 4 hoodies appeared from nowhere luckily the 3 of us in the car are all over 6ft 6" tall i got out me and my mate caught 2 of them where they both wet there trousers and...