In Section 10.5.4, the draft spells it out clearly: after every ignition — excluding automatic stop-start — a car must be in a state where its 0–62 mph time is at least five seconds …
Then comes the big crunch, the rainy scene where the whole mood completely changes. But still the story-teller keeps his hole card out of sight. When the true nature of what is going on becomes evident, you realize the story is one of the most frightening anyone can imagine, and only then do you really appreciate the quality of the acting.