Sam Peckinpah became a legend in Hollywood for the garnishing of layered detail on his otherwise "blood n'guts" moviemaking . It was the stuff that my geeky friends and I would discuss for hours ! Directors that employed trains in their movies rarely seemed to understand much about how trains worked . That Peckinpah would "get it" as far as as a detail of a "stretched" train being impossible to uncouple is an example of his brilliance at his art . Sometimes it was hilarious , in a black humor fashion . In "Bring Me the Head of Alfredo Garcia" , the business proposition is negotiated in an incredibly sleazy bar(you could almost smell the sweat , stale beer and cigarette smoke) on the outskirts of Mexico City . As the men negotiate ,you can hear car tires periodically squeal outside. Not real loud , just background noise . A car misses the curve ,and crashes ,and none of the "players" even look up . As Warren Oates totes the severed appendage in a gunny sack for the rest of the movie ,you can hear the flies buzzing ! I quit counting the dead at 28 . Ah , true Peckinpah !!!!