A temp vehicle is a vehicle that you can temporarily use as a courtesy car. So for example, there are no courtesy cars available but you have a demo that is free which could be used as a temporary courtesy car. You can select the "Temp Vehicle" option and add these details into here.
We advice that when you use a stock record as a temporary car that you add this as a note to the stock record so that you are aware the vehicle has been used as a temporary courtesy car.
The temporary vehicle will also appear on the courtesy car history report.