Invent a new garden tool

You know those robotic mowers/dusters or the automatic warehouses like amazon, well I would like my seedling trays to have wheels/tracks so I could just press a button to put them all under shelter on the cold nights. Alternatively I'd like a network of pulleys and wires that disappear during the day of course, to direct fleece over tenders when the nights get chillier than expected.

I don't think I'd find a picture of either of these on the net, do you?