Custom admin only page
Is it possible to create a page in admin which shows a specific search result? I am currently planning a website for a car leasing company which will list hundreds of cars and in the car detail template there will be a checkbox called 'homepage' and if checked a snippet of content for that car will appear in the site's home page. In Admin I'd like to be able to show the client, at a glance, which cars currently appear on the home page so they can easily edit those cars e.g. to unselect the checkbox to remove those cars from the homepage.
Is this possible/supported?