I do agree with all comments! Lexus or military/governement cars, non-common sense bus driver and something which may happen during raining season: chicken holes and fill with water and you don't see how deep they are! Then never cross then at speed... you may fall by 10-20cm, and I can garantee that will help you to learn flying
drive slow, is the 1rst rule in cambodia!
I made 7000km in SEA 2y ago, and the worst road i have experienced is PP to Siem Reap.