China is going a step further in its generous support for hydrogen cars in the form of a package of policies aimed at improving the hydrogen fuel cell car supply chain and further advancing the relevant technologies, Reuters reports citing a government official. The package will target specifically on long-haul vehicles such as heavy-duty trucks. China has been actively promoting hydrogen as part of its future energy mix, even including it among energy sources in a national law for the first time earlier this year. It also separated its promotional…