President Jiang Zemin came to life on his last day in the US - singing, joking, marvelling at the very latest space technology and being freed by satellite from a locked supercar. He was jovial and relaxed as he donned a blue dust jacket to tour the General Motors-owned Hughes Electronics plant in Los Angeles, his last stop before boarding his flight back to Beijing this morning. He was fascinated by GM's cars of the future, getting behind the wheel of its 'SSC Intelligent Vehicle', that uses radar to avoid accidents and a satellite to open its doors should the driver forget the key. He also sat in the passenger seat of the Buick Regal which will be built in Shanghai next year. He tried a little charm on his hosts: Michael T. Smith, who heads Hughes Electronics, and brother John F. Smith, the boss at GM. 'Now, I know you're brothers because your faces are very similar,' said Mr Jiang, prompting laughter from hundreds of Hughes and GM employees. By lunch, the President was in full stride, laughing and joking with California Governor Pete Wilson at a banquet given in his honour by more than 1,000 Chinese and Chinese-Americans. 'A bright moon in the sky,' a grinning Mr Jiang wailed, as he launched into the Chinese opera Zhuofangcao, much to the delight of the audience at the Beverly Hilton hotel. He took the part of the conductor for a spirited rendition of The Great Motherland, the welcoming garland of flowers still draped around his neck. And to top it off, he had the crowd laughing out loud as he practised his Cantonese.