Use of oil for transportation has increased from 30% ten years ago to nearly 50% in 2013, according to Sanford Bernstein, as more cars are added to China's roads. This makes it less likely that a slowdown in China's growth will affect demand for oil. Sales of passenger cars increased by 11% in January and February 2014. A study at France's central bank by Gauvin and Rebillard shows only a much smaller effect on oil prices from a hard landing of the Chinese economy, compared to the effect on metal prices. Passenger cars now make up two out of three vehicles on Chinese roads, according to LMC Automotive. The growth in cars is likely to continue, not just in China, but in other emerging markets such as India, Brazil, Mexico and Russia. Metal consumption is different, as it comes mostly from housing, infrastructure and factories which are the most affected parts of the economy in China.