"What could have done that to him?"

"People just explode. Natural causes."

Repo Man (1984) directed by Alex Cox, starring Emilio Estevez and Harry Dean Stanton. Also starring Tracey Walter, Olivia Barash, Sy Richardson, Susan Barnes, Fox Harris, Tom Finnegan,  Del Zamora, Eddie Velez, Zander Schloss, Jennifer Balgobin, Dick Rude, Miguel Sandoval, Vonetta McGee, Richard Foronjy, the Circle Jerks and Samuel T. Cohen, inventor of the neutron bomb