Surfing purists may not appreciate this, but the days of not being able to surf because of bad waves could soon be a thing of the past. Introducing: Jetsurf boards.
The motor can vary between 86 and 100 cc and is "the most powerful engine of its kind designed by man." The pro race model can max out at 35 mph. You can read more about them at Jetsurf's website. According to one site, the boards cost between $12,500 and $19,500.
Hat tip to Devour for the find.