I think this feature is a must. Add a simple button or command that snaps the loaded object on the ground. Every time I add a vehicle to Flow Design is lifted of the ground and to adjust the wind tunnel area is extremely hard, especially in Flow Design. While was still Falcon, in the latest versions you could change to orthographic mode and ajust the wind tunnel somehow more easily, but in Flow Design, even when I change the view to rothographic, the wind tunnel box remains in persective and is impossible to accurately adjust the wind tunnel box.