Most of it wouldn't be too hard to figure out. Pretty much just make up "screen play" for each scene, a light draft of dialog, and kinda just wing it. Really the only thing stopping this from happening for me is the lack of video/editing equipment. If I had this stuff I would just acquire video over the summer, and slowly edit it together. We would need people that are willing to participate in the different segments and have their cars filmed.
Also we would have to figure out how we want to do "Car of the Quarter". This would rely heavily on the website for nominations and voting. The winner could be revealed in the video, and then a banner could be placed somewhere on the site, linking to that persons gallery. This is something that we could do even just on the site even if we don't go forward with this video thing.
All of this really just popped in my head today, and I wanted to write it down before I forgot about it haha.