Dealer Pages Clone

I need a used car sales business content management system (CMS) that has ALL of the features that the CMS used by <[login to view URL]> has. The CMS must make it easy for me to create lots of used car sales sites from one place. However each used car sales site must have it's own individual bespoke appearance, it's own control panel etc. The system must be able to automatically update itself when new car models arrive, I'm not sure how it will do this but you must find a reputable source where it can grab an up-to-date list of car models, i.e. like insurance websites have. You must create one example used car website that is running using the CMS system and it must look as good as <[login to view URL]>. This system should be made in PHP.