The energy of the crowd is insane. Twenty thousand people. It’s the biggest jolt of adrenaline. It’s very hard to explain. You know the old story about the woman lifting the car off her kid? It’s in that realm. You can actually hurt yourself and not know it.

Petty is describing the physiological and psychological surge that can accompany performing before a large audience. By calling the crowd’s energy “insane” and comparing it to the folklore of a parent lifting a car in an emergency, he frames live performance as a kind of extreme, adrenaline-driven state in which ordinary limits temporarily loosen. The remark also carries a warning: the same heightened focus and intensity that can make a show exhilarating can dull pain and self-awareness, so a performer may overexert, take risks, or sustain injuries without registering them in the moment. It’s a demystifying glimpse of rock spectacle as bodily labor as much as art.