Modular vertical garage

This is a modular garage system that I made to store my aeronautics contraptions. It's inspired by automated parking systems.

It's able to handle up to 15 parking slots with the current selection system but could handle way more with a better one. For now, you can select a parking slot with the lectern, click the button and the selected slot will be brought to the top floor. You can click the button again to send back the slot to the right location even if the lectern page has been changed. Each floor can have a different height as long as the catching mechanism and the plateform are on the same y level.
Gantry contraptions are a bit slippery for Sable contraptions, so the speed set for the gantry shafts seems to be the optimal one.
Since gantry shafts do not consume SU, they can be powered with a simple water wheel and a rotation speed controller to set the right speed.