CONSTRUCTION tycoon Gordon Wu Ying-sheung, the eternal optimist as well as the scourge of cynics, is ready to take the plunge . . . into Victoria Harbour. The Hopewell Holdings managing director yesterday pledged to live up to a promise he made last year, to take a dip if his Guangzhou-Shenzhen-Zhuhai superhighway was not finished by last month. Speaking at an American Chamber of Commerce conference on China, Mr Wu admitted his time had come. ''I said if I didn't finish it in September, I would jump into Victoria Harbour. Since I haven't finished it, I will jump into Victoria Harbour,'' he said. But Mr Wu was not worried. ''I reckon it's very safe. There are probably more sharks on the island than in the water,'' he said. So when will he do it? ''I think I want to do that after I finish the road.'' When pressed by reporters for a chance to witness the event, he said: ''Let's do that. Let's make it a charitable event. I'll jump in and give some money to charity.'' The superhighway will open to traffic in phases, with the first part starting next month, the second in December and the subsequent phase in January or February. Last Saturday, to see how work had progressed, Mr Wu drove more than 130 kilometres along the road and was pleased with what he saw. Under its contract, Hopewell is supposed to finish the road by next June, but Mr Wu could not help adding: ''We're going to finish it well before that.'' Is that another bet?