Haikou's electric cars at random to break the red light, rush, retrograde, and other problems are common, as Haikou's existing motorcycles are discarded, electric cars have become a "substitute" for many motorcycle owners. A reporter visited the Haikou electric car market and found that electric cars were selling hot, and in order to meet the public's demand for speed, some sellers cut off the speed limit line of electric cars to allow electric cars to speed up to 40 kilometers on the basis of a limited speed of 20 kilometers. Electric cars run too fast, worrying.