Amazing £1m vintage Ferrari speedboat for sale

Boat sales aren't usually the sort of thing we'd cover here on Autoblog, but the Arno XI Hydroplane is no ordinary boat. Nope, the one-off Arno XI Hydroplane is quite literally the Ferrari of speedboats.

Built in 1952 with the help of Enzo Ferrari himself, the Arno XI has a 12-cylinder Ferrari racing engine, taken from a Type 375 Ferrari Grand Prix car but with the addition of two superchargers. The result is 502bhp.