[hollerith]

China does not produce enough oil to run its current fleet of cars and trucks. They get most of their oil from the Persian Gulf and they correctly worry that that supply line will be pinched (or cut off entirely) if the US gets angry at them (similar to how the US is angry with Russia now) or if some actor like Iran stops the flow of oil out of the Gulf. Most of the oil and oil products China gets from Russia leave Russia on ships from Russia's European ports -- another long supply line.

So for sensible national-security reasons that do not apply to the US (namely, making sure it can continue to transport things like food to all its citizens if its national-security competitor gets angry at it or if the Persian Gulf becomes unstable) China is interested in electrifying its vehicle fleet since China has plenty of coal with which to generate electricity.

Because coal is the fossil fuel that produces the most carbon dioxide per unit of heat produced, it might be the an electric car in China will more greenhouse gas than a gas-powered car in the US.