From BBC News
By way of preparation, Cronenberg showed his crew the 2009 film Lebanon, which takes place inside an Israeli tank, and 1981 war epic Das Boot, which takes place inside a German submarine.
"I said: 'Let's not be intimidated by this, this could be quite exhilarating if we do it right.' We built a limo that comes apart like a Lego car in about 24 pieces. I don't think of it as a challenge, but ...