The Hydro-Foam is a remote control electric airplane powered by a brushless motor and lithium-polymer batteries.
That's gonna make it a bit expensive - brushlesses aren't cheap, neither are the ESCs that control them. LiPo batteries are great but need special chargers to stop them catching fire
By the way a brushless motor is so powerful just one of them in a 5kg odd 1/8 scale RC car can easily outrun a nitro engined car of similar size/weight. You're looking at sorta 50-60mph with these motors

That equates to around 3hp if you're interested.
Jon