Baidu opened its autonomous ride-hailing pilot program to the public in the southern Chinese city of Guangzhou Saturday, operating a fleet of 30 sedans in an area of around 60 square miles in Huangpu district. The internet giant has been piloting restricted non-commercial robotaxi services in four domestic cities, with plans to expand the numbers to 30 cities and 3,000 vehicles over the next three years. [Baidu press release, in Chinese]