General Motors said on Friday its first mini-car for China, the Spark, will roll off the assembly line on Saturday, while pricing of the 51-horsepower model will be announced in early December, when it is delivered to dealers in China, Dow Jones reported. The news agency noted that the car is at the centre of a dispute about copyright protection in China - it is said to resemble another China-made vehicle, dubbed the Chery, which is built by one of GM's partners in China.