Cigarette's 50-foot "Vision GT Concept" has twin 1,650-horsepower Mercury Racing engines and a lightweight body that can help the boat reach top speeds of 140 mph.
(Read more: Which state leads in millionaires per capita?)
It's got carbon fiber dash panels with silver-face gauges, Bluetooth, and high-tech navigation and audio.
Price tag: $1.5 million.
Skip Braver, CEO of Cigarette Racing, said that he's had "strong interest" from several potential buyers.
"The interest has been incredible," he said.
Ferrari doesn't seem to have gotten into the act in an official way. But photos of a $4 million LaFerrari Boat—inspired by the $1.4 million LaFerrari—have recently been making the rounds on the Web. The boat is powered by two 900-horsepower Volvo engines and has five flat-screen TVs and plush leather interiors.
A LaFerrari powered by Volvo? Sure, it's a stretch. But since the LaFerrari is already sold out, perhaps you have a better chance of buying the boat.
—By CNBC's Robert Frank. Follow him on Twitter