How to create a form that allows user to enter a variable number of items

I am a total beginner to Microsoft Access 2010. I need a form that allows a user add items from as list to a list. The items can be added until initial list is exhausted. Here's the most basic example I can give. Lets suppose that two persons attend a car show. As they are leaving, they are asked their name, and what cars they saw. First person saw only two cars. The second one saw fifty cars. On the form, they would write their name one time (at the top of the page) and then they have to fill the list of cars they saw from the list of all cars. They would not write their name next to each car. How do I create an equivalent MS Access 2010 form?