It may require less parking space if cars which are usually moved only in the front-back direction can be moved in the traverse direction. The sliding car lift enables to do the impossible.
It is integrated a traverser which can be moved in the traverse direction with the car lift.
Just move cars in the traverse direction when they arrive at the destination floor.
It is needless to turn the steering wheel of a car.
It is needless to install the machine room on the upper floor because of hydraulic type.
The biggest advantage is wider usage of building and more effective parking.