Back in 2009, the Chinese government agreed to slash sales tax on vehicles sporting engines that displace 1.6 liters or less. The decision, which halved sales tax from ten percent to five percent, should've spurred the purchase of fuel-efficient autos. Apparently, it didn't.
The General Motors assembly plant in Ellesmere Port in England has been on a major energy efficiency kick for the last four years. The plant that assembles Astras has cut the amount of energy they use to build cars by fifty percent.