Hi Robert. Welcome to another member from Down-under. I hailed originally from the same place, only a little more North than you, in what one might well now call, for now anyway, 'the land of the America's Cup', rather than the 'long white cloud', shall we..?
The Kapiti Coast, if memory serves, is just a bit North of Wellington, on the Western side of the lower North Island..? Drove through there many times when visiting a brother who was for a time in Wellington. Also enjoyed ducking down there for when they used to run the Nissan/Mobil 500, waterfront street race. Do you remember those - are you old enough even - maybe not as it was the mid 80s..?
As to the Greenline series. They are a very interesting concept, and if I was having my time over, I'd certainly be keen to get into one. That technology, as with road vehicles, is bound to develop a lot over time. Good luck with you efforts to obtain one. Please keep us informed.
PS. Don't mind old RTF - he's still convinced we're all hanging upside down in our part of the world.