The HydraJet is a unique hybrid of a hydroplane and airboat, unlike typical RC boats or hydrofoils. It is a fast and agile hydroplane that skims the water, propelled by a top-mounted 70-mm Electric ...

While hydrofoils lift out of the water thanks to an underwater fin, hydroplanes zoom along by riding directly on the surface ...

A four-level "quadplex" penthouse located in the skinniest skyscraper on Manhattan 's Billionaires Row just hit the market ...