Add car to invetory

*User Story:
As a car salesperson
I want to record a newly acquired car
So that I can list it in my lost

*Acceptance Criteria:
I must specify the color, year, mileage of the car.
Only years from 1980 and above can be specified.
I can optionally specify a description of the car.
If I enter all of the required information in the required format, the car is recorded.
If I do not specify all of the required information in the required formats, the car is not recorded and I am presented with errors.
Upon successfully creating a car, I am redirected so that I can create another car.