The distance that separates Hanoi and Saigon is around 1,800 kilometers. Driving from Phnom Penh to Saigon took me over four hours on my first trip. The roads were in very bad shape. The dry surface of the road had a thick layer of fine soil. The car was driving through "mud fog." The car was flying too, thank God the guide had advised me to bring a mask along or I would not have been able to breathe. I needed to brush off the taxi dust when I finished every day's journey, which totally covered my hair and eyebrows. Shu and Vietnam Port Neutral Zone. On the Vietnamese side, Mupai Port.