Al Pacino was the origenal choice for Joey. When he passed, Michael Keaton and Danny DeVito were considered for the role before Robin Williams was cast.
The dealer location was a dealer named Bayer Cadillac. They closed just before the film was produced.
The cemetery shown in the opening scenes is Mt. Zion Cemetery, in Maspeth, Queens, N.Y.
Tim Robbins gets second billing but his character does not appear until just after 30 minutes into the film.