build a ruby on rails application for service center -- 2

Create a rails app for car servicing/collision center to track all their customers. So they really wanted to store every customer information who enters their shop and record everything about car, service needed, information, parts replaced etc all information about that customer and their car. Its like any car servicing/repair show room. Consider all the things they should do to automate customer relationship. They can even remind them about regular service maintenance or they can send them coupons occasionally. Your app should help them automate and improve their business.