The things I need done to this (if you are interested):
Directory Interface - Make / Model
Featured Car Listing For Home & Category/Subcat
SEO Friendly URLs "/make/model/id/name-of-car.html"
ability to change metatags per page (mostly want it automated automated however but I would like the ability to have fields for description, keywords, title, that I can adjust)
Autothumbnail generation set size. Ability to regenerate from originals if I want to change size of them)
Ability to add multiple images per car (up to 8 on free, maybe 16 on paid)
Ability to Limit the Amount of Cars per account
Limit to amount of cars for for different user account types
Ability to customize layout of car page & template
Customer (dealer) can choose either monthly paypal payments (integrated monthly subscription - payment gateway) that will allow for contact infomation to be placed on the page (contact info would expire not the page or listing) or a free account with unlimited cars with all contact from viewers coming to me, cars sold would be 5% per sale. They have "sign" agreement. I would broker deals without the "dealer" or "individual"'s contact info on page of car.
Need to be able to import datafile such as Excel spreedsheet or CSV.
Cars cannot be deleted (unless in admin). Only marked as sold. (this way the webpage stays up but an image displays indicating sold)
Users can only admin their cars and bulk upload datafile and pictures to their own directory (no deleting, only replacing)
Administrator has ultimate choice to moderate if cars go live automatically or after approval per user.
Many ways to search for cars: by miles or state, type of car, model, year, keyword etc.
Way to mark ads they like (maybe set cookie?) so they can return.
Tell a friend (about a car) on each car page - spam proof it with image verify.
Email notification feature: based on when new cars are added to site. The viewer can choose how often. They get notified when certain type of car is posted. Can choose keywords, makes, models, years (or span of years)
templated system (so I can format things easy and add adsense where I want it)
Images on page: [url removed, login to view] I like the way that looks with the thumbs below except one thing. I want it to be able to pop-up with a largest version of the image.
Like the carfax vin insertion into affiliate link (but I am not affiliate yet), but I most likely can alter the template to do this much.
Ability to add new listing fields easy. And ability to add listing fields to template easy like <? $listingfield1; ?>
accounts must activate via email
use contact form that is spam proof
Bad word filter in admin area would be nice.
Email notification to paid members when subscription expires.
Category (make model) listing for left navigation area and footer (using an include maybe)
Breadcrumb & Back / Next
View Map for address of paid members.
watermark bottom corner of uploaded images with small semitransparent text. Like " [url removed, login to view] "
Eport car data as well
Seller login area (we have that now but just reminder)
I have imagemagick on my server and php5. I have tested this [url removed, login to view] and you may want to build off its foundation to make the job go quicker. Can see example at [url removed, login to view]