I’ve a design….
I think my “bike bell” concept consisting of a suspended capsule (large pipe bolted 8ft up a wall) with a vented but weatherproof top and a door at the base.
Inside a small winch (ruggedized key operated on wall) raises the bike up inside the tube, once the bike is inside, the door at the base is closed & auto locks.
when you come to collect it, as you turn the key, the capsule is opened & the bike is lowered.
The exterior of the tube can be used as advertising/signage space.
Six units could be accommodated within a single free standing open air car parking space. Six capsule pod groups could also be accessed in a mechanized multistory facility.
(c) MrNutt 2010
Thats my idea, buy it if you like! 😀