I Too Think It Warrants Further Investigation.

https://news.sky.com/story/oscar-winning-actor-gene-hackman-and-wife-found-dead-at-home-13317861

Accidental Carbon Monoxide poisoning is the most likely explanation. Although that's normally visibly obvious from the bodies.

However we are now approaching Oscars weekend. The main competitor to the Southern Pacific Railroad in California was the Santa Fe Railroad, which didn't actually go to Santa Fe.

While there's all sorts of potential for; "Hack Man."