This amphibious bus is part of a proposed plan to improve public transport in the Scottish city of Glasgow. It's currently undergoing "sea" trials on the River Clyde. It has encountered problems, but it has not sunk. Yet.
It's a bus. It's a boat. No! The Amphicoach is both! According to the Maltese company behind this ambitious tourist vehicle, it's the only fully amphibious passenger vehicle meeting "relevant" EU standards. Whatever those are.