motorbike swap, country to country, hope you can help.

[steviegasgas]

Can anyone help?
Last year I met a chap who was on holiday on a motorbike, he was from New Zealand and he was a member of a bike swap club. He flew to England, borrowed a bike for touring around, then the owner of the bike was going to borrow his when on holiday in NZ. Anyone know the name of the website or club etc?
This sounds a great idea and fancy doing it myself, any help would be greatly appreciated, cheers.