Yours will end up more accurate than mine. I could never find the resin body and had to make mine from a Taurus and a Dodge Caravan kit. What I ended up with is close and for a movie car I am hppy with it. The tree is a O scale tree. It's a kit and I used two of them to get the length needed.
Can't wait to see how yours comes out.........now how do we build a Truckster from Vacation??