Your task is to create an Object Oriented application used to maintain a catalog of used cars. The catalog keeps track of each car's make, model, year, and sale price.
The program begins with an empty catalog. The user is prompted to enter one of three possible commands:

add - add a single car to the catalog
import - allows you to import a file of cars into the catalog (CSV file)
list - list all cars in the catalog
search by make, model, year or price
search by type (sedan, truck, SUV, minivan)
quit - quit the application