Actually it is a largely cultural thing in many ways......
Personally I have several decades experience of promoting events - rock concerts, green events, motoring, charities and sailing etc. I'm experienced and quite well connected in that respect.
I have outline support from the BBC (natal history) and an Oz channel, several accessory manufacturers, electronics companies camping equipment etc have also expressed an interest.
It seems that I might be better off contacting Nissan Australia. The Thai idea of a "promotion" is to ask a local MAFIA member and a few monks to attend a large meal with balloons. Marketing in Thailand is in its infancy.
With any "charitable" event the crucial point is when enough people believe that enough other people are coming on board - that is the tipping point and we haven't reached that yet.
in the end the vehicle is not crucial, but it would be nice to get a manufacturer on board. It's not about directly or instantly affecting vehicle sales - Nissan would not be looking at an instant result there - that is not what the project is about - it is a question of generating a positive corporate image for the products involved - as Nissan have a whole department promoting and sponsoring "green" projects in isn't hard to make a connection
BTW - the D22 is no longer sold in Thailand or I believe ASEAN.