Its like that in vietnam too, 6 hours is 8 or 9 in good conditions and riding double the speed limit. Last month, google maps tried to send me down a road that is under water for 3 months of the year, after several miles of construction. I switched to waze after google kept routing me off the highway and through dirt trails between farms or dense, winding neighborhood allys to avoid interchanges. At one point google hated a highway so much I had to put traffic stop every 20 miles or do or it would tell me to turn around and make a 1 hour detour instead of following a straight, empty highway.