The Main Tool Window of the ADAS Sensor Configuration Editor (for vehicles) is found in the mode bar of the world editor.
The window contains a list of all vehicles which are currently loaded.
Beside each vehicle, there are some buttons:
Remove Vehicle will remove the vehicle completely from the scene, thus removing it from the list.
Go To Vehicle will move the camera to the selected vehicle, for closer inspection.
Open Attached Sensors will open the Attached Sensors Window for the selected vehicle. This is where the user can choose sensors then attach them to positions on (or relative to) the selected vehicle.
