XPeng is still focused in boosting the sales of its electric cars. But it has been focusing on building out future businesses in flying cars and robotics.Qilai Shen | Bloomberg | Getty ImagesXPeng Robotics, the affiliate company of Chinese electric carmaker XPeng, on Tuesday said it raised $100 million as part of its aim to commercialize household robotics in the next two years.The financing was led by high-profile venture capital firm IDG Capital, with XPeng also participating.XPeng Robotics said in a press release that the money would be used to strengthen its research and development investment in robotic hardware and…