Here is a great idea:
1-5th of a month, a person can put there self up for entry with one pic/post in entry thread for TOTM. In that single post, the user is responsable to list info they like to represent except additional pictures, which must be linked off to another site, site garage, etc. User decides how and is responable to do so. This way the site won't be flooded with pics and bandwith. On the 6th lock thread making it uneditable and link it to the poll thread for people to look and vote.
6-last day of month, all entrys are in a poll with the one pic. All site members can vote, even vote for yourself if you like (only reason to allow that is cause that would be much easier for the site/less work) Besides one vote made by each owns ride, any fool would vote for themself and it would be almost even there unless you don't vote for yourself. Also if there are 32 entries, 20 people may not have a vote and people may not like getting no votes, so why not let it fly? Only thing that would have to worry about cheating is fake users, with that put a restriction such as minimum posts to vote and minimum time on site?
1st day of next month,The winner is discovered and poll is locked, only that one pic goes to the winning history, no truck info etc. Easier for admins
This way there would be so much little work for the site. Basically 2 threads, one as an entry and another as the poll. I think it would also be more fun this way, having say 12 entrys versous 3 is much more competitive, would be just like a car show. Like a car show, the user must post/clean and represent on their own and the show/site just hosts and gives credit to the winner. And of course have the limit when a winner can enter again.