If you happened to see the two “Skate Jet” vehicles at the beach today, here is the skinny from their website on what they are:
This German development, is well engineered and easy to control. With the standard speed up to 40 mph, it is possible for about everybody to enjoy “waterskiing on the road”. But, if one is hungry for speed, the fun goes up to 80 mph.
There are some interesting videos of them in action on their website, seen here.