I had to look this up, it seems it was related to the myth of a LOX tanker truck spilling/crashing and turning the road asphalt itself into an explosive. Seems

I had to look this up, it seems it was related to the myth of a LOX tanker truck spilling/crashing and turning the road asphalt itself into an explosive. Seems kinda weird to omit this though as it's not really arcane knowledge (Pretty sure "The Martian" had a scene where they blow open an airlock with something similar). Other mythbusters censors include dropping an entire episode about credit card hacks/fakes because Visa and friends threatened to pull ads from the network, and another episode where they accidentally caused their test mice to cannibalize each other.