“Very few autos!!!! “
Meant for supporting military traffic?
https://www.travelchinaguide.com/map/highway.htm
Have to wonder how many regular Chinese have autos?
Yes, maybe. But all of those spans of bridges make for easy targets to bomb. Take out one pillar and a whole span will likely collapse. But yes, while they are up, they are good for rapid military road transport.
Just think, this would not have been possible without he swamp sending our jobs overseas so we can buy everything China makes and sell it at Walmart and Amazon. Such a huge sell out to the American (and western European) citizens just so millionaires can become powerful billionaires and thwart elections of countries.