'(= (Car_Weight ?X)
(+ (Car_Cab_Weight ?X)
(+ (Platform_Weight ?X)
(+ (Sling_Weight ?X)
(+ (Safety_Beam_Weight ?X)
(+ (Car_Fixture_Weight ?X)
(+ (Car_Supplement_Weight (Elevator.Car ?X))
(Car_Misc_Weight ?X))))))))