 As Planet Terror took shape, Tarantino developed the story for Death Proof, based on his fascination for the way stuntmen would "death-proof" their cars. As long as they were driving, stuntmen could slam their cars headfirst into a brick wall at 60 mph (97 km / h) and survive. This inspired Tarantino to create a slasher film featuring a deranged stuntman who stalks and murders sexy young women with his "death-proof" car. Tarantino remembers, "I realized I couldn 't do a straight slasher film, because with the exception of women-in-prison films, there is no other genre quite as rigid. And if you break that up, you aren't really doing it anymore. It's inorganic, so I realized — let me take the structure of a slasher film and just do what I do. My version is going to be fucked up and disjointed, but it seemingly uses the structure of a slasher film, hopefully against you."
