We drove Chau Doc - Nha Trang. The bus was confortable and the ride itself good. The problem was that they moved the departure time by 2h earlier just 8h before the departure. Also the pickup point on 12go was obviously wrong and 2 phone calls did not reveal the true location, so we just drove around until we found the bus. Then we arrived at 4AM instead of 7AM at Nha Trang with nothing open and not enough sleep.