Not something you see every day.

This is Royal Navy Motor Boat "Hebe' leaving Kip Marina on the Firth of Clyde on a lorry  on the way to Portsmouth. We were chatting to the lorry driver while he was waiting for the police escort to arrive. It's a state of the art autonomous minesweeper. 

https://www.royalnavy.mod.uk/news-and-latest-activity/news/2021/june/21/210621-final-autonomous-minehunter-delivered

https://www.marinetraffic.com/en/ais/details/ships/shipid:6164158/mmsi:232026014/imo:0/vessel: RNMB_HEBE