What ever happened to this trip?
did it take place?

I'd like to do something similar.
THe roads routes don't worry me
Me concerns are for documents and red tape.

What do you need (carnet etc) to get a Thai registered car into Indonesia?
I believe Malaysia is quite straight forward.
THe time limit for a car to be away from Thailand is somethingI hadn't thought about.
Is it really 3 months?
Most places it seems to be six.
I've looked at IMPORTING the car to Oz, but that involves a huge amount of paperwork and compliance regs on the car.