Drones with on-demand streetlamps.

Project vid: https://www.youtube.com/watch?v=YNBte-xNGUg

Making-of/background vid: https://www.youtube.com/watch?v=Nl0bFLe1i4g - worth a watch

It’s apparently open-source, too: https://www.directline.com/lib/campaign/fleetlights/pdf/fleetlights_tech_manual.pdf