There have been several references about other sites Model of the Month, one site BMC has a tri-annual contest that runs rather smoothly. The current topic is Indy Cars. There is only one class, a wip must be done, and it is judged by popular vote. Some topics are chosen by popular vote and some are chosen by management.
This doesn't have to be as difficult as some suggest. I do like the 1:24-1:25 rule. You can detail a 1:6 far easier than a 1:25. In fact what's to stop someone from entering a 1:1? All cars are kits made by assembling parts and the detailing is so accurate and realistic.
