The organiser of a daring skate down the Bombay Hills expressway for visiting longboarders has struck back at critics who called them idiots.

Jestah Carnie, who builds the alternative skateboards from his Mt Eden home, was one of the six riders seen in YouTube footage riding along State Highway 1 at up to 100km/h who have been labelled idiots by traffic police.

Visiting Canadian rider Andrew Chapman films the ride and is seen passing a truck-and-trailer unit before the group take the State Highway 2 offramp.

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