There are two vehicles with simple interior: Van and RV.

The attached FBX files are the original exported files, aligned at the 0,0,0 point, with quadrilateral faces for easy modification and adjustment in the future. The precision is approximately 512 pixels per meter, and some props placed on the roof have slightly lower precision.

You can see the preview video:https://www.youtube.com/watch?v=L_rcD_VfNg0