1. Open the “Vehicle Library” dialogue box.
2. Select the vehicle for the 3D preview and click on 
.
3. If the selected vehicle is not a customized vehicle, Autopath creates a customized vehicle out of it and ask you to provide it with a name.
4. At this point, the “Edit vehicle” dialog box opens. Find the icon 
in the “Additional settings” section and click on it.
5. After the last action, pick a point in the model to insert the 3D model of the vehicle.
6. Click on to finish the preview process. Note that if you want to keep the 3D model in your drawing, you can always copy the 3D solids elements and paste them at any other place of your drawing. In this way, the vehicle 3D model remains in your drawing even after finishing the preview process.