MobileUnitRef

Unified read-only snapshot of any mobile unit. Returned by: fleet.mobile_units()

Member	Returns	Meaning
.category	string	"vehicle" or "drone": branch on this
.id	string	Stable component id
.name	string	Display name at snapshot time
.kind	string	"rover", "pioneer", or a drone chassis id
.status	string	Union of the vehicle and drone status sets
.x / .y / .position()	number / Position	Coordinates at snapshot time
.is_docked	boolean	Parked at a service point/station
.is_being_rescued	boolean	A rescue/recovery mission owned this unit
.rescue_status	string	"none" / "outbound" / "charging" / "carrying" / "returning"

For engine or battery specifics, use VehicleRef / DroneRef from the dedicated lists.