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Max Olson is the founder and CEO of SeaChange, a company that wants to build hydro-foil car and passenger ferries that would deliver zero-emission transit. Earlier this year the company successfully trialled a prototype, and plans are now underway to scale it up and take it across Cook Strait. Max joins Kathryn to talk about why he believes there's been under-investment in ocean travel when it comes to transport and the benefits it could bring to the environment.