I just finished watching a Vietnamese martial arts movie. Ya. Go figure.
It took place in 1950s Vietnam. The hero and heroine were escaping. They shoot a military truck in the gas tank and it explodes thereby facilitating their escape.
OK, OK, I know. It is Hollywood, or at least the Vietnamese equivalent. But if a bullet were to strike a gas tank, especially a vintage 1950s truck, would it explode? Or does it only explode if you are an escaping hero?