Just home from 2 1/2 weeks in Vanuatu. Interestingly there is an almost total dearth of scooters even in the busy capital Port Vila - a system of minibuses (mostly Toyota Hi Aces) do the job, but there are a lot of big privately owned utes (pickups) as well - on the wages they receive I would have thought the Indonesian style scooter would be commonplace, but realistically, even they are probably out of reach. Population is tiny compared to Indonesia of course, and that factor comes into it.
We found it an incredibly expensive place to live and travel in, far moreso than in places like Bali, where the locals (and travellers if they wish) can still afford to access basic amenities like supermarkets, and food stalls are available to all at manageable prices. That discrepancy between the gringo economy and the local economy in Vanuatu is vast. Many end up having to work OS to move beyond subsistence. All that aside, a beautiful place and wonderful people.