Worth mentioning any of the following too:

Do you already have most or all of the imagery required (like did fast ford give you a cd when they were taking pictures up at your workshop, do you have originals of artwork for logos, pictures already done of customer cars etc)

Do you already have any form of CMS in place now from which data will need to be migrated or is it greenfield development?

Does it need to intergrate with your ebay shop or will that be handled seperately?

Does the multimedia section just need to link to youtube or will it need streaming from the server?

Do you already have your own hosting, or do you need that to be provided too?