There are many ways to report on your sales in Camelot. Most of the various sales reports are in the General Sales report folder on the Reports screen.
To report on sales grouped by the Vehicle the job was assigned to, there is a Sales by Vehicle report. This will show you the total sales for each Vehicle.
The most common criteria for the report is:
Order Status is exactly Done
AND Date Order Reported is between [whatever date range]
You cannot select individual vehicles for this report. It will show you the totals for all vehicles. For a report that gives you more detailed options in the criteria, you would need to create a new report based on the Order List dataset, and group by the Vehicle field there.
