The shopping cart is a feature similar to those of online shopping websites where you can add multiple items to it rather than dealing with individual items one at a time. Within AutoQuotes, the cart allows you to add multiple items to a project at the same time, saving time and hassle.
To add items to the cart, click the "Cart" button. To keep a track of what you've added, the items are shown in both the top and bottom left as shown in the screenshot below.
Once you've added the items you need, set the quantity for each item and click on the "Add to Project" button. If you wish to delete items you can either hover over each one and click the blue "X" or use the "Clear Cart" button to delete them all.