My wife and I ate at this Thai Truck (called Opal) in late June 2014. We were driving around the island on vacation, and this Thai Truck was conveniently located right at the side of the main highway. It doesn't show up in some guidebooks because this is a new location for it.
At first, I was skeptical if the food would be any good or if they would be able to accomodate our vegetarian preferences properly given that this literally a stationary food truck.
Our experience was WOW! Fantastic food and service. This place is better than most other Thai sit down restaurants I've eaten at in the Islands and is competitive with great Thai restaurants anywhere on the mainland. And the menu is quite large -- and they are able to do some customizing too.
We ordered Pad Khee Mao with tofu, and another dish that was not exactly on the menu, but when we mentioned it, the owner new exactly what to make: garlic tofu. The garlic tofu was absolutely fantastic. The Pad Khee Mao was very tasty, but medium spicy was a little too hot for our tastes -- next time, we would just want to order mild and I bet it will be perfect for our taste buds.
We were assured no oyster sauce or any other non-veg ingredients would be used. The owner, who takes orders, immediately understood our concerns. That was really nice and made things so much easier.
It takes a little time to get the food ready, but there are picnic benches you can sit on while you wait. The food is very fresh, so its worth the small wait.
The portions are huge -- the owner made it sound like they were small, but one dish could have fed us both really well. We are nevertheless glad we got 2 so we had 2 different dishes to try. We took the rest "to go", which the owner kindly packed nicely for us.
If we're in Oahu again, we would love to come back and eat here even if we were staying on the Waikiki side (a 1+ hour drive even when traffic is low) -- it was THAT good. Bravo to the owner for great service, flexibility, and most importantly, great taste!
Note: TripAdvisor is asking rating on romance & special occassions -- since this is a truck on the side of the road, it would be dishonest for me to rate these two attributes high (and these are really irrelevant for a food truck). But, don't let that discourage you - the FOOD IS OUTSTANDING and its very convenient for those taking the drive on the North Shore. That's what counts.