Inspiration of this movie?

I was recently reading some information about the Pierce Brothers Valhalla Memorial cemetary in Burbank.... I was reading about the fake mystic "Criswell" who appears in a lot of Ed Wood's movies and is buried there. Then by chance, I happened to be attending a film convention near there in Burbank, so I decided to bring Criswell some flowers. Now as I was reading about the cemetary, a lot of details about it reminded me of the movie "The Loved One." This is all from wikipedia so take it with a grain of salt, but see if this doesn't ring a bell for you too:

http://en.wikipedia.org/wiki/Valhalla_Memorial_Park_Cemetery

"But just five months after the dedication, Osborne and Fitzpatrick were convicted of fraud. They had sold the same burial plots repeatedly--as many as 16 times--and netted a profit of $3 million to $4 million, according to Los Angeles Times stories of the era. They were fined $12,000 each and sentenced to 10 years in prison but served less than half the sentence."

Also if you look at the pictures, there's a whole shrine there for aviation pioneers, and a lot of famous pilots and astronauts are buried there. So there's a connection to the aeronautics industry.

Could be just a shot in the dark, but I wonder if the writers had heard about some of this stuff and decided to embellish it and satirize it?

Did I not love him, Cooch? MY OWN FLESH I DIDN'T LOVE BETTER!!! But he had to say 'Nooooooooo'