General Motors Co (GM.N) said vehicle sales in China rose 15 percent to a record monthly high in October, underpinned by the Chinese government’s decision to cut taxes for smaller cars. The company said retail sales in the first 10 months of 2015 climbed 2.9 percent from a year earlier to 2.8 million units, also a record. The result provides a bright spot for China’s auto market which has struggled due to an economic slowdown in the world’s second largest economy.