Car Inventory for showroom

I need android application for eg: consider car showroom so the app should list all new cars and used cars along with their specification such that every time inventory is updated the app should get updated. home page list all best cars and deals like [login to view URL] provision for user if he or she wants to sell car to showroom or if he/she interested in car deal so get their details like email id,phone no and send to car showroom. The app should connected to server to receive all [login to view URL] app size should be very less. Note : Prepare with more categories of car for used and new cars. make provision for filter to select appropriate car. This is just R & D project not commercial.